Wednesday, 14 March 2018

RAC to Non-RAC Database Cloning


Environment:-

Source Database:- DB11G
Source DB Instance:- DB11G1,DB11G2
Source Server:- rac1,rac2

Target Database:- SNAP
Target Server:- ora11gr2
--------------------------------------

Steps:-


1. Check the Database,dbfiles server details along with pfile
2. Take backup of source RAC database
3. Transfer the backups and pfile to target server
4. Modify the pfile as per requirement
5. Create all the required file system paths
6. Create password file and Startup nomount the database
7. Make entry in tnsnames.ora
8. Make entry in listener.ora
9. Check the connection using rman
10. Start Duplicate target database to new db name
11. Disable thread 2 redolog group and drop unnecessary redolog groups after creating new groups
12. Drop unused second undo tablespace
13. Check all the database files and status
==================================================================================================================================================



Step:-1


Source Database Files



NAME      OPEN_MODE            LOG_MODE     DATABASE_ROLE
--------- -------------------- ------------ ----------------
DB11G     READ WRITE           ARCHIVELOG   PRIMARY

INSTANCE_NAME    LOGINS     HOST_NAME            DB Startup Time
---------------- ---------- -------------------- -----------------------------
DB11G1           ALLOWED    rac1.oracle.com      14-MAR-2018 18:15:14

INSTANCE_NUMBER INSTANCE_NAME    HOST_NAME                           STATUS       NAME      OPEN_MODE       LOG_MODE     DATABASE_ROLE
--------------- ---------------- ----------------------------------- ------------ --------- --------------- ------------ ----------------
              1 DB11G1           rac1.oracle.com                     OPEN         DB11G     READ WRITE      ARCHIVELOG   PRIMARY
              2 DB11G2           rac2.oracle.com                     OPEN         DB11G     READ WRITE      ARCHIVELOG   PRIMARY

Tablespace                         Used MB     Free MB    Total MB  Pct. Free   PCT_USED
------------------------------ ----------- ----------- ----------- ---------- ----------
SYSAUX                                 523          27         550       4.91      95.09
UNDOTBS1                                91           4          95       4.21      95.79
USERS                                    3           2           5         40         60
SYSTEM                                 746           4         750        .53      99.47
EXAMPLE                                309           4         313       1.28      98.72
UNDOTBS2                                32          18          50         36         64

6 rows selected.

TABLESPACE                       GB_TOTAL    GB_USED    GB_FREE
------------------------------ ---------- ---------- ----------
TEMP                               .03125          0     .03125

TABLESPACE_NAME              FILE_ID FILE_NAME                                                       SIZE_GB AUT
------------------------- ---------- ------------------------------------------------------------ ---------- ---
USERS                              4 +DATA/db11g/datafile/users.259.952163787                     .004882813 YES
UNDOTBS1                           3 +DATA/db11g/datafile/undotbs1.258.952163787                  .092773438 YES
SYSAUX                             2 +DATA/db11g/datafile/sysaux.257.952163785                    .537109375 YES
SYSTEM                             1 +DATA/db11g/datafile/system.256.952163783                    .732421875 YES
EXAMPLE                            5 +DATA/db11g/datafile/example.264.952164051                   .305786133 YES
UNDOTBS2                           6 +DATA/db11g/datafile/undotbs2.265.952164501                  .048828125 YES

6 rows selected.

TABLESPACE_NAME              FILE_ID FILE_NAME                                                       SIZE_GB AUT
------------------------- ---------- ------------------------------------------------------------ ---------- ---
TEMP                               1 +DATA/db11g/tempfile/temp.263.952164033                          .03125 YES

   INST_ID     GROUP#    THREAD#    SIZE_MB    MEMBERS STATUS
---------- ---------- ---------- ---------- ---------- ----------------
         1          1          1         50          1 INACTIVE
         1          2          1         50          1 CURRENT
         1          3          2         50          1 INACTIVE
         1          4          2         50          1 CURRENT
         2          1          1         50          1 INACTIVE
         2          2          1         50          1 CURRENT
         2          3          2         50          1 INACTIVE
         2          4          2         50          1 CURRENT

8 rows selected.

   INST_ID     GROUP# MEMBER
---------- ---------- ------------------------------------------------------------
         1          1 +DATA/db11g/onlinelog/group_1.261.952164009
         1          2 +DATA/db11g/onlinelog/group_2.262.952164013
         1          3 +DATA/db11g/onlinelog/group_3.266.952164647
         1          4 +DATA/db11g/onlinelog/group_4.267.952164651
         2          1 +DATA/db11g/onlinelog/group_1.261.952164009
         2          2 +DATA/db11g/onlinelog/group_2.262.952164013
         2          3 +DATA/db11g/onlinelog/group_3.266.952164647
         2          4 +DATA/db11g/onlinelog/group_4.267.952164651

8 rows selected.

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
spfile                               string      +DATA/db11g/spfiledb11g.ora

NAME
-------------------------------------------------
+DATA/db11g/controlfile/current.260.952164003
+DATA/db11g/controlfile/current.260.952164003


Source Pfile (RAC db pfile)



cat initDB11G.ora
---------------------------------
DB11G1.__db_cache_size=620756992
DB11G2.__db_cache_size=620756992
DB11G1.__java_pool_size=16777216
DB11G2.__java_pool_size=16777216
DB11G1.__large_pool_size=33554432
DB11G2.__large_pool_size=33554432
DB11G1.__oracle_base='/u02/app/oracle'#ORACLE_BASE set from environment
DB11G1.__pga_aggregate_target=671088640
DB11G2.__pga_aggregate_target=671088640
DB11G1.__sga_target=989855744
DB11G2.__sga_target=989855744
DB11G1.__shared_io_pool_size=0
DB11G2.__shared_io_pool_size=0
DB11G1.__shared_pool_size=301989888
DB11G2.__shared_pool_size=301989888
DB11G1.__streams_pool_size=0
DB11G2.__streams_pool_size=0
*.audit_file_dest='/u02/app/oracle/admin/DB11G/adump'
*.audit_trail='db'
*.cluster_database=true
*.compatible='11.2.0.4.0'
*.control_files='+DATA/db11g/controlfile/current.260.952164003'
*.db_block_size=8192
*.db_create_file_dest='+DATA'
*.db_domain=''
*.db_name='DB11G'
*.db_recovery_file_dest_size=10737418240
*.db_recovery_file_dest='+DATA'
*.diagnostic_dest='/u02/app/oracle'
*.dispatchers='(PROTOCOL=TCP) (SERVICE=DB11GXDB)'
DB11G1.instance_number=1
DB11G2.instance_number=2
*.memory_target=1654652928
*.open_cursors=300
*.processes=150
*.remote_listener='rac-scan.oracle.com:1521'
*.remote_login_passwordfile='exclusive'
DB11G2.thread=2
DB11G1.thread=1
DB11G2.undo_tablespace='UNDOTBS2'
DB11G1.undo_tablespace='UNDOTBS1'


Step:-2


RMAN Backup of Source Database:-


[oracle@rac1 ~]$ rman target /

Recovery Manager: Release 11.2.0.4.0 - Production on Wed Mar 14 19:25:40 2018

Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.

connected to target database: DB11G (DBID=421833570)

RMAN> run {
sql 'alter system archive log current';
sql "alter session set nls_date_format=''dd.mm.yyyy hh24:mi:ss''";
configure controlfile autobackup on;
set command id to 'DBOnlineBackupFull';
ALLOCATE CHANNEL c1 DEVICE TYPE disk;
ALLOCATE CHANNEL c2 DEVICE TYPE disk;
ALLOCATE CHANNEL c3 DEVICE TYPE disk;
ALLOCATE CHANNEL c4 DEVICE TYPE disk;
backup AS COMPRESSED BACKUPSET full database tag DB_FULL format '/mnt/hgfs/DB_Backup/%d_%T_%s_%p_FULL.bkp' ;
sql 'alter system archive log current';
backup tag DB_ARCHIVE format '/mnt/hgfs/DB_Backup/%d_%T_%s_%p_ARCHIVE.bkp' archivelog all;
backup tag DB_CONTROL current controlfile format '/mnt/hgfs/DB_Backup/%d_%T_%s_%p_CONTROL.bkp';
delete noprompt obsolete;
delete noprompt expired backup;
release channel c1;
release channel c2;
release channel c3;
release channel c4;
}2> 3> 4> 5> 6> 7> 8> 9> 10> 11> 12> 13> 14> 15> 16> 17> 18> 19> 20>

using target database control file instead of recovery catalog
sql statement: alter system archive log current

sql statement: alter session set nls_date_format=''dd.mm.yyyy hh24:mi:ss''

old RMAN configuration parameters:
CONFIGURE CONTROLFILE AUTOBACKUP ON;
new RMAN configuration parameters:
CONFIGURE CONTROLFILE AUTOBACKUP ON;
new RMAN configuration parameters are successfully stored

executing command: SET COMMAND ID

allocated channel: c1
channel c1: SID=58 instance=DB11G1 device type=DISK

allocated channel: c2
channel c2: SID=49 instance=DB11G1 device type=DISK

allocated channel: c3
channel c3: SID=54 instance=DB11G1 device type=DISK

allocated channel: c4
channel c4: SID=62 instance=DB11G1 device type=DISK

Starting backup at 14-MAR-18
channel c1: starting compressed full datafile backup set
channel c1: specifying datafile(s) in backup set
input datafile file number=00001 name=+DATA/db11g/datafile/system.256.952163783
input datafile file number=00006 name=+DATA/db11g/datafile/undotbs2.265.952164501
channel c1: starting piece 1 at 14-MAR-18
channel c2: starting compressed full datafile backup set
channel c2: specifying datafile(s) in backup set
input datafile file number=00002 name=+DATA/db11g/datafile/sysaux.257.952163785
input datafile file number=00004 name=+DATA/db11g/datafile/users.259.952163787
channel c2: starting piece 1 at 14-MAR-18
channel c3: starting compressed full datafile backup set
channel c3: specifying datafile(s) in backup set
input datafile file number=00005 name=+DATA/db11g/datafile/example.264.952164051
input datafile file number=00003 name=+DATA/db11g/datafile/undotbs1.258.952163787
channel c3: starting piece 1 at 14-MAR-18
channel c3: finished piece 1 at 14-MAR-18
piece handle=/mnt/hgfs/DB_Backup/DB11G_20180314_11_1_FULL.bkp tag=DB_FULL comment=NONE
channel c3: backup set complete, elapsed time: 00:01:16
channel c2: finished piece 1 at 14-MAR-18
piece handle=/mnt/hgfs/DB_Backup/DB11G_20180314_10_1_FULL.bkp tag=DB_FULL comment=NONE
channel c2: backup set complete, elapsed time: 00:01:56
channel c1: finished piece 1 at 14-MAR-18
piece handle=/mnt/hgfs/DB_Backup/DB11G_20180314_9_1_FULL.bkp tag=DB_FULL comment=NONE
channel c1: backup set complete, elapsed time: 00:02:58
Finished backup at 14-MAR-18

Starting Control File and SPFILE Autobackup at 14-MAR-18
piece handle=+DATA/db11g/autobackup/2018_03_14/s_970774135.280.970774139 comment=NONE
Finished Control File and SPFILE Autobackup at 14-MAR-18

sql statement: alter system archive log current

Starting backup at 14-MAR-18
current log archived
channel c1: starting archived log backup set
channel c1: specifying archived log(s) in backup set
input archived log thread=1 sequence=6 RECID=1 STAMP=970772793
channel c1: starting piece 1 at 14-MAR-18
channel c2: starting archived log backup set
channel c2: specifying archived log(s) in backup set
input archived log thread=2 sequence=2 RECID=2 STAMP=970772803
channel c2: starting piece 1 at 14-MAR-18
channel c3: starting archived log backup set
channel c3: specifying archived log(s) in backup set
input archived log thread=1 sequence=7 RECID=3 STAMP=970772803
input archived log thread=2 sequence=3 RECID=4 STAMP=970772812
input archived log thread=1 sequence=8 RECID=5 STAMP=970772812
input archived log thread=2 sequence=4 RECID=7 STAMP=970773758
channel c3: starting piece 1 at 14-MAR-18
channel c4: starting archived log backup set
channel c4: specifying archived log(s) in backup set
input archived log thread=1 sequence=9 RECID=6 STAMP=970773754
input archived log thread=1 sequence=10 RECID=8 STAMP=970773880
input archived log thread=2 sequence=5 RECID=9 STAMP=970773882
input archived log thread=1 sequence=11 RECID=10 STAMP=970773946
channel c4: starting piece 1 at 14-MAR-18
channel c3: finished piece 1 at 14-MAR-18
piece handle=/mnt/hgfs/DB_Backup/DB11G_20180314_15_1_ARCHIVE.bkp tag=DB_ARCHIVE comment=NONE
channel c3: backup set complete, elapsed time: 00:00:08
channel c3: starting archived log backup set
channel c3: specifying archived log(s) in backup set
input archived log thread=2 sequence=6 RECID=11 STAMP=970773948
input archived log thread=1 sequence=12 RECID=13 STAMP=970774157
channel c3: starting piece 1 at 14-MAR-18
channel c4: finished piece 1 at 14-MAR-18
piece handle=/mnt/hgfs/DB_Backup/DB11G_20180314_16_1_ARCHIVE.bkp tag=DB_ARCHIVE comment=NONE
channel c4: backup set complete, elapsed time: 00:00:04
channel c4: starting archived log backup set
channel c4: specifying archived log(s) in backup set
input archived log thread=2 sequence=7 RECID=12 STAMP=970774152
input archived log thread=2 sequence=8 RECID=14 STAMP=970774179
input archived log thread=1 sequence=13 RECID=15 STAMP=970774180
channel c4: starting piece 1 at 14-MAR-18
channel c1: finished piece 1 at 14-MAR-18
piece handle=/mnt/hgfs/DB_Backup/DB11G_20180314_13_1_ARCHIVE.bkp tag=DB_ARCHIVE comment=NONE
channel c1: backup set complete, elapsed time: 00:00:11
channel c2: finished piece 1 at 14-MAR-18
piece handle=/mnt/hgfs/DB_Backup/DB11G_20180314_14_1_ARCHIVE.bkp tag=DB_ARCHIVE comment=NONE
channel c2: backup set complete, elapsed time: 00:00:18
channel c4: finished piece 1 at 14-MAR-18
piece handle=/mnt/hgfs/DB_Backup/DB11G_20180314_18_1_ARCHIVE.bkp tag=DB_ARCHIVE comment=NONE
channel c4: backup set complete, elapsed time: 00:00:07
channel c3: finished piece 1 at 14-MAR-18
piece handle=/mnt/hgfs/DB_Backup/DB11G_20180314_17_1_ARCHIVE.bkp tag=DB_ARCHIVE comment=NONE
channel c3: backup set complete, elapsed time: 00:00:16
Finished backup at 14-MAR-18

Starting backup at 14-MAR-18
channel c1: starting full datafile backup set
channel c1: specifying datafile(s) in backup set
including current control file in backup set
channel c1: starting piece 1 at 14-MAR-18
channel c1: finished piece 1 at 14-MAR-18
piece handle=/mnt/hgfs/DB_Backup/DB11G_20180314_19_1_CONTROL.bkp tag=DB_CONTROL comment=NONE
channel c1: backup set complete, elapsed time: 00:00:15
Finished backup at 14-MAR-18

Starting Control File and SPFILE Autobackup at 14-MAR-18
piece handle=+DATA/db11g/autobackup/2018_03_14/s_970774249.285.970774251 comment=NONE
Finished Control File and SPFILE Autobackup at 14-MAR-18

RMAN retention policy will be applied to the command
RMAN retention policy is set to redundancy 1
Deleting the following obsolete backups and copies:
Type                 Key    Completion Time    Filename/Handle
-------------------- ------ ------------------ --------------------
Archive Log          1      14-MAR-18          +DATA/db11g/archivelog/2018_03_14/thread_1_seq_6.269.970772787
Archive Log          2      14-MAR-18          +DATA/db11g/archivelog/2018_03_14/thread_2_seq_2.270.970772795
Archive Log          3      14-MAR-18          +DATA/db11g/archivelog/2018_03_14/thread_1_seq_7.271.970772801
Archive Log          4      14-MAR-18          +DATA/db11g/archivelog/2018_03_14/thread_2_seq_3.272.970772811
Archive Log          5      14-MAR-18          +DATA/db11g/archivelog/2018_03_14/thread_1_seq_8.273.970772811
Archive Log          6      14-MAR-18          +DATA/db11g/archivelog/2018_03_14/thread_1_seq_9.274.970773755
Archive Log          7      14-MAR-18          +DATA/db11g/archivelog/2018_03_14/thread_2_seq_4.275.970773757
Archive Log          8      14-MAR-18          +DATA/db11g/archivelog/2018_03_14/thread_1_seq_10.276.970773879
Archive Log          9      14-MAR-18          +DATA/db11g/archivelog/2018_03_14/thread_2_seq_5.277.970773881
Archive Log          10     14-MAR-18          +DATA/db11g/archivelog/2018_03_14/thread_1_seq_11.278.970773945
Archive Log          11     14-MAR-18          +DATA/db11g/archivelog/2018_03_14/thread_2_seq_6.279.970773947
Backup Set           4      14-MAR-18
  Backup Piece       4      14-MAR-18          +DATA/db11g/autobackup/2018_03_14/s_970774135.280.970774139
Backup Set           7      14-MAR-18
  Backup Piece       7      14-MAR-18          /mnt/hgfs/DB_Backup/DB11G_20180314_13_1_ARCHIVE.bkp
Backup Set           9      14-MAR-18
  Backup Piece       9      14-MAR-18          /mnt/hgfs/DB_Backup/DB11G_20180314_14_1_ARCHIVE.bkp
Backup Set           5      14-MAR-18
  Backup Piece       5      14-MAR-18          /mnt/hgfs/DB_Backup/DB11G_20180314_15_1_ARCHIVE.bkp
Backup Set           6      14-MAR-18
  Backup Piece       6      14-MAR-18          /mnt/hgfs/DB_Backup/DB11G_20180314_16_1_ARCHIVE.bkp
Backup Set           11     14-MAR-18
  Backup Piece       11     14-MAR-18          /mnt/hgfs/DB_Backup/DB11G_20180314_19_1_CONTROL.bkp
deleted archived log
archived log file name=+DATA/db11g/archivelog/2018_03_14/thread_1_seq_6.269.970772787 RECID=1 STAMP=970772793
deleted archived log
archived log file name=+DATA/db11g/archivelog/2018_03_14/thread_2_seq_2.270.970772795 RECID=2 STAMP=970772803
deleted archived log
archived log file name=+DATA/db11g/archivelog/2018_03_14/thread_1_seq_7.271.970772801 RECID=3 STAMP=970772803
deleted archived log
archived log file name=+DATA/db11g/archivelog/2018_03_14/thread_2_seq_3.272.970772811 RECID=4 STAMP=970772812
deleted archived log
archived log file name=+DATA/db11g/archivelog/2018_03_14/thread_1_seq_8.273.970772811 RECID=5 STAMP=970772812
deleted archived log
archived log file name=+DATA/db11g/archivelog/2018_03_14/thread_1_seq_9.274.970773755 RECID=6 STAMP=970773754
deleted archived log
archived log file name=+DATA/db11g/archivelog/2018_03_14/thread_2_seq_4.275.970773757 RECID=7 STAMP=970773758
deleted archived log
archived log file name=+DATA/db11g/archivelog/2018_03_14/thread_1_seq_10.276.970773879 RECID=8 STAMP=970773880
deleted archived log
archived log file name=+DATA/db11g/archivelog/2018_03_14/thread_2_seq_5.277.970773881 RECID=9 STAMP=970773882
deleted archived log
archived log file name=+DATA/db11g/archivelog/2018_03_14/thread_1_seq_11.278.970773945 RECID=10 STAMP=970773946
deleted archived log
archived log file name=+DATA/db11g/archivelog/2018_03_14/thread_2_seq_6.279.970773947 RECID=11 STAMP=970773948
deleted backup piece
backup piece handle=+DATA/db11g/autobackup/2018_03_14/s_970774135.280.970774139 RECID=4 STAMP=970774139
deleted backup piece
backup piece handle=/mnt/hgfs/DB_Backup/DB11G_20180314_13_1_ARCHIVE.bkp RECID=7 STAMP=970774182
deleted backup piece
backup piece handle=/mnt/hgfs/DB_Backup/DB11G_20180314_14_1_ARCHIVE.bkp RECID=9 STAMP=970774183
deleted backup piece
backup piece handle=/mnt/hgfs/DB_Backup/DB11G_20180314_15_1_ARCHIVE.bkp RECID=5 STAMP=970774188
deleted backup piece
backup piece handle=/mnt/hgfs/DB_Backup/DB11G_20180314_16_1_ARCHIVE.bkp RECID=6 STAMP=970774188
deleted backup piece
backup piece handle=/mnt/hgfs/DB_Backup/DB11G_20180314_19_1_CONTROL.bkp RECID=11 STAMP=970774234
Deleted 17 objects


specification does not match any backup in the repository

released channel: c1

released channel: c2

released channel: c3

released channel: c4

RMAN> exit


Recovery Manager complete.


[oracle@rac1 ~]$
[oracle@rac1 ~]$
[oracle@rac1 ~]$ cd -
/mnt/hgfs/DB_Backup
[oracle@rac1 DB_Backup]$
[oracle@rac1 DB_Backup]$ ls -ltr
total 331160
-rwxrwxrwx. 1 root root  23560192 Mar 14 13:57 DB11G_20180314_11_1_FULL.bkp
-rwxrwxrwx. 1 root root  76824576 Mar 14 13:58 DB11G_20180314_10_1_FULL.bkp
-rwxrwxrwx. 1 root root 209158144 Mar 14 13:59 DB11G_20180314_9_1_FULL.bkp
-rwxrwxrwx. 1 root root     88576 Mar 14 14:00 DB11G_20180314_18_1_ARCHIVE.bkp
-rwxrwxrwx. 1 root root  29473280 Mar 14 14:00 DB11G_20180314_17_1_ARCHIVE.bkp



RMAN> backup tag DB_CONTROL current controlfile format '/mnt/hgfs/DB_Backup/%d_%T_%s_%p_CONTROL.bkp';

Starting backup at 14-MAR-18
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=72 instance=DB11G1 device type=DISK
channel ORA_DISK_1: starting full datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set
including current control file in backup set
channel ORA_DISK_1: starting piece 1 at 14-MAR-18
channel ORA_DISK_1: finished piece 1 at 14-MAR-18
piece handle=/mnt/hgfs/DB_Backup/DB11G_20180314_21_1_CONTROL.bkp tag=DB_CONTROL comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:07
Finished backup at 14-MAR-18

Starting Control File and SPFILE Autobackup at 14-MAR-18
piece handle=+DATA/db11g/autobackup/2018_03_14/s_970776131.280.970776135 comment=NONE
Finished Control File and SPFILE Autobackup at 14-MAR-18

RMAN> exit

[oracle@rac1 DB_Backup]$ ls -ltr
total 331160
-rwxrwxrwx. 1 root root  23560192 Mar 14 13:57 DB11G_20180314_11_1_FULL.bkp
-rwxrwxrwx. 1 root root  76824576 Mar 14 13:58 DB11G_20180314_10_1_FULL.bkp
-rwxrwxrwx. 1 root root 209158144 Mar 14 13:59 DB11G_20180314_9_1_FULL.bkp
-rwxrwxrwx. 1 root root     88576 Mar 14 14:00 DB11G_20180314_18_1_ARCHIVE.bkp
-rwxrwxrwx. 1 root root  29473280 Mar 14 14:00 DB11G_20180314_17_1_ARCHIVE.bkp
-rwxrwxrwx. 1 root root  18546688 Mar 14 14:32 DB11G_20180314_21_1_CONTROL.bkp




Step:-3

3. Transfer the backups and pfile to target server




Step:-4


Target Pfile (Standalone pfile)



cat initSNAP.ora
---------------------------------
#DB11G1.__db_cache_size=620756992
#DB11G2.__db_cache_size=620756992
#DB11G1.__java_pool_size=16777216
#DB11G2.__java_pool_size=16777216
#DB11G1.__large_pool_size=33554432
#DB11G2.__large_pool_size=33554432
#DB11G1.__oracle_base='/u02/app/oracle'#ORACLE_BASE set from environment
#DB11G1.__pga_aggregate_target=671088640
#DB11G2.__pga_aggregate_target=671088640
#DB11G1.__sga_target=989855744
#DB11G2.__sga_target=989855744
#DB11G1.__shared_io_pool_size=0
#DB11G2.__shared_io_pool_size=0
#DB11G1.__shared_pool_size=301989888
#DB11G2.__shared_pool_size=301989888
#DB11G1.__streams_pool_size=0
#DB11G2.__streams_pool_size=0
SNAP.__db_cache_size=620756992
SNAP.__java_pool_size=16777216
SNAP.__large_pool_size=33554432
SNAP.__oracle_base='/u01/app/oracle'#ORACLE_BASE set from environment
SNAP.__pga_aggregate_target=671088640
SNAP.__sga_target=989855744
SNAP.__shared_io_pool_size=0
SNAP.__shared_pool_size=301989888
SNAP.__streams_pool_size=0
#*.audit_file_dest='/u02/app/oracle/admin/DB11G/adump'
*.audit_file_dest='/u01/app/oracle/admin/SNAP/adump'
*.audit_trail='db'
#*.cluster_database=true
*.compatible='11.2.0.4.0'
#*.control_files='+DATA/db11g/controlfile/current.260.952164003'
*.control_files='/u01/app/oracle/SNAP/controlfile/control01.ctl'
*.db_block_size=8192
*.db_create_file_dest='+DATA'
*.db_domain=''
*.db_name='SNAP'
*.db_recovery_file_dest_size=10737418240
#*.db_recovery_file_dest='+DATA'
*.db_recovery_file_dest='/u01/app/oracle/SNAP/recovery_area'
#*.diagnostic_dest='/u02/app/oracle'
*.diagnostic_dest='/u01/app/oracle'
*.dispatchers='(PROTOCOL=TCP) (SERVICE=DB11GXDB)'
#DB11G1.instance_number=1
#DB11G2.instance_number=2
#*.memory_target=1654652928
#*.memory_target=1G
*.open_cursors=300
*.processes=150
#*.remote_listener='rac-scan.oracle.com:1521'
*.remote_login_passwordfile='exclusive'
#DB11G2.thread=2
#DB11G1.thread=1
#DB11G2.undo_tablespace='UNDOTBS2'
#DB11G1.undo_tablespace='UNDOTBS1'
*.db_file_name_convert='+DATA/db11g/datafile/','/u01/app/oracle/SNAP/datafile/','+DATA/db11g/tempfile/','/u01/app/oracle/SNAP/tempfile/'
*.log_file_name_convert='+DATA/db11g/onlinelog/','/u01/app/oracle/SNAP/logfile/'
undo_tablespace='UNDOTBS1'


After Modification Target Pfile (Standalone pfile)
===================================================

cat initSNAP.ora
---------------------------------
SNAP.__db_cache_size=620756992
SNAP.__java_pool_size=16777216
SNAP.__large_pool_size=33554432
SNAP.__oracle_base='/u01/app/oracle'#ORACLE_BASE set from environment
SNAP.__pga_aggregate_target=671088640
SNAP.__sga_target=989855744
SNAP.__shared_io_pool_size=0
SNAP.__shared_pool_size=301989888
SNAP.__streams_pool_size=0
*.audit_file_dest='/u01/app/oracle/admin/SNAP/adump'
*.audit_trail='db'
*.compatible='11.2.0.4.0'
*.control_files='/u01/app/oracle/SNAP/controlfile/control01.ctl'#Restore Controlfile
*.db_block_size=8192
*.db_create_file_dest='+DATA'
*.db_domain=''
*.db_file_name_convert='+DATA/db11g/datafile/','/u01/app/oracle/SNAP/datafile/','+DATA/db11g/tempfile/','/u01/app/oracle/SNAP/tempfile/'
*.db_name='SNAP'#Reset to original value by RMAN
*.db_recovery_file_dest_size=10737418240
*.db_recovery_file_dest='/u01/app/oracle/SNAP/recovery_area'
*.diagnostic_dest='/u01/app/oracle'
*.dispatchers='(PROTOCOL=TCP) (SERVICE=DB11GXDB)'
*.log_file_name_convert='+DATA/db11g/onlinelog/','/u01/app/oracle/SNAP/logfile/'
*.open_cursors=300
*.processes=150
*.remote_login_passwordfile='exclusive'



Step:-5

5. Create all the required file system paths


mkdir -p /u01/app/oracle/SNAP/datafile
mkdir -p /u01/app/oracle/SNAP/controlfile
mkdir -p /u01/app/oracle/SNAP/logfile
mkdir -p /u01/app/oracle/SNAP/tempfile



Step:-6

Create password file and Startup nomount the database



[oracle@ora11gr2 dbs]$ pwd
/u01/app/oracle/product/11.2.0.4/db_1/dbs
[oracle@ora11gr2 dbs]orapwd file=orapwSNAP password=password entries=10


[oracle@ora11gr2 dbs]$ sq

SQL*Plus: Release 11.2.0.4.0 Production on Wed Mar 14 18:52:06 2018

Copyright (c) 1982, 2013, Oracle.  All rights reserved.

Connected to an idle instance.

18:52:07 SYS@SNAP>create spfile from pfile;

File created.

18:52:11 SYS@SNAP>startup nomount
ORACLE instance started.

Total System Global Area  221331456 bytes
Fixed Size                  2251856 bytes
Variable Size             163578800 bytes
Database Buffers           50331648 bytes
Redo Buffers                5169152 bytes


Step:-7


Make entry in tnsnames.ora



[oracle@ora11gr2 admin]$ cat tnsnames.ora
# tnsnames.ora Network Configuration File: /u01/app/oracle/product/11.2.0.4/db_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.

DB11G =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = rac-scan.oracle.com)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = DB11G)
    )
  )

SNAP =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = ora11gr2.localdomain)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = SNAP)
    )
  )




Step:-8


Make entry in listener.ora


[oracle@ora11gr2 admin]$ cat listener.ora
# listener.ora Network Configuration File: /u01/app/oracle/product/11.2.0.4/db_1/network/admin/listener.ora
# Generated by Oracle configuration tools.

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = ora11gr2.localdomain)(PORT = 1521))
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
    )
  )

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (GLOBAL_DBNAME = TANMAY)
      (ORACLE_HOME = /u01/app/oracle/product/11.2.0.4/db_1)
      (SID_NAME = SNAP)
    )
  )

ADR_BASE_LISTENER = /u01/app/oracle



Step:-9


Check the connection using rman



[oracle@ora11gr2 DB_Backup]$ rman target sys/password@DB11G auxiliary sys/password@SNAP

Recovery Manager: Release 11.2.0.4.0 - Production on Wed Mar 14 18:56:41 2018

Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.

connected to target database: DB11G (DBID=421833570)
connected to auxiliary database: SNAP (not mounted)

RMAN> 



Step:-10

Start Duplicate target database to new db name



[oracle@ora11gr2 DB_Backup]$ rman target sys/password@DB11G auxiliary sys/password@SNAP

Recovery Manager: Release 11.2.0.4.0 - Production on Wed Mar 14 18:56:41 2018

Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.

connected to target database: DB11G (DBID=421833570)
connected to auxiliary database: SNAP (not mounted)

RMAN> duplicate target database to SNAP;

Starting Duplicate Db at 14-MAR-2018 18:57:00
using target database control file instead of recovery catalog
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=19 device type=DISK

contents of Memory Script:
{
   sql clone "alter system set  db_name =
 ''DB11G'' comment=
 ''Modified by RMAN duplicate'' scope=spfile";
   sql clone "alter system set  db_unique_name =
 ''SNAP'' comment=
 ''Modified by RMAN duplicate'' scope=spfile";
   shutdown clone immediate;
   startup clone force nomount
   restore clone primary controlfile;
   alter clone database mount;
}
executing Memory Script

sql statement: alter system set  db_name =  ''DB11G'' comment= ''Modified by RMAN duplicate'' scope=spfile

sql statement: alter system set  db_unique_name =  ''SNAP'' comment= ''Modified by RMAN duplicate'' scope=spfile

Oracle instance shut down

Oracle instance started

Total System Global Area     221331456 bytes

Fixed Size                     2251856 bytes
Variable Size                163578800 bytes
Database Buffers              50331648 bytes
Redo Buffers                   5169152 bytes

Starting restore at 14-MAR-2018 18:57:11
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=18 device type=DISK

channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: restoring control file
channel ORA_AUX_DISK_1: reading from backup piece +DATA/db11g/autobackup/2018_03_14/s_970776131.280.970776135
channel ORA_AUX_DISK_1: ORA-19870: error while restoring backup piece +DATA/db11g/autobackup/2018_03_14/s_970776131.280.970776135
ORA-19505: failed to identify file "+DATA/db11g/autobackup/2018_03_14/s_970776131.280.970776135"
ORA-17503: ksfdopn:2 Failed to open file +DATA/db11g/autobackup/2018_03_14/s_970776131.280.970776135
ORA-15001: diskgroup "DATA" does not exist or is not mounted
ORA-15077: could not locate ASM instance serving a required diskgrou
failover to previous backup

channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: restoring control file
channel ORA_AUX_DISK_1: reading from backup piece /mnt/hgfs/DB_Backup/DB11G_20180314_21_1_CONTROL.bkp
channel ORA_AUX_DISK_1: piece handle=/mnt/hgfs/DB_Backup/DB11G_20180314_21_1_CONTROL.bkp tag=DB_CONTROL
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:07
output file name=/u01/app/oracle/SNAP/controlfile/control01.ctl
Finished restore at 14-MAR-2018 18:57:20

database mounted

contents of Memory Script:
{
   set until scn  1052346;
   set newname for datafile  1 to
 "/u01/app/oracle/SNAP/datafile/system.256.952163783";
   set newname for datafile  2 to
 "/u01/app/oracle/SNAP/datafile/sysaux.257.952163785";
   set newname for datafile  3 to
 "/u01/app/oracle/SNAP/datafile/undotbs1.258.952163787";
   set newname for datafile  4 to
 "/u01/app/oracle/SNAP/datafile/users.259.952163787";
   set newname for datafile  5 to
 "/u01/app/oracle/SNAP/datafile/example.264.952164051";
   set newname for datafile  6 to
 "/u01/app/oracle/SNAP/datafile/undotbs2.265.952164501";
   restore
   clone database
   ;
}
executing Memory Script

executing command: SET until clause

executing command: SET NEWNAME

executing command: SET NEWNAME

executing command: SET NEWNAME

executing command: SET NEWNAME

executing command: SET NEWNAME

executing command: SET NEWNAME

Starting restore at 14-MAR-2018 18:57:27
using channel ORA_AUX_DISK_1

channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_AUX_DISK_1: restoring datafile 00003 to /u01/app/oracle/SNAP/datafile/undotbs1.258.952163787
channel ORA_AUX_DISK_1: restoring datafile 00005 to /u01/app/oracle/SNAP/datafile/example.264.952164051
channel ORA_AUX_DISK_1: reading from backup piece /mnt/hgfs/DB_Backup/DB11G_20180314_11_1_FULL.bkp
channel ORA_AUX_DISK_1: piece handle=/mnt/hgfs/DB_Backup/DB11G_20180314_11_1_FULL.bkp tag=DB_FULL
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:35
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_AUX_DISK_1: restoring datafile 00002 to /u01/app/oracle/SNAP/datafile/sysaux.257.952163785
channel ORA_AUX_DISK_1: restoring datafile 00004 to /u01/app/oracle/SNAP/datafile/users.259.952163787
channel ORA_AUX_DISK_1: reading from backup piece /mnt/hgfs/DB_Backup/DB11G_20180314_10_1_FULL.bkp
channel ORA_AUX_DISK_1: piece handle=/mnt/hgfs/DB_Backup/DB11G_20180314_10_1_FULL.bkp tag=DB_FULL
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:01:16
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_AUX_DISK_1: restoring datafile 00001 to /u01/app/oracle/SNAP/datafile/system.256.952163783
channel ORA_AUX_DISK_1: restoring datafile 00006 to /u01/app/oracle/SNAP/datafile/undotbs2.265.952164501
channel ORA_AUX_DISK_1: reading from backup piece /mnt/hgfs/DB_Backup/DB11G_20180314_9_1_FULL.bkp
channel ORA_AUX_DISK_1: piece handle=/mnt/hgfs/DB_Backup/DB11G_20180314_9_1_FULL.bkp tag=DB_FULL
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:02:15
Finished restore at 14-MAR-2018 19:01:35

contents of Memory Script:
{
   switch clone datafile all;
}
executing Memory Script

datafile 1 switched to datafile copy
input datafile copy RECID=8 STAMP=970772496 file name=/u01/app/oracle/SNAP/datafile/system.256.952163783
datafile 2 switched to datafile copy
input datafile copy RECID=9 STAMP=970772496 file name=/u01/app/oracle/SNAP/datafile/sysaux.257.952163785
datafile 3 switched to datafile copy
input datafile copy RECID=10 STAMP=970772496 file name=/u01/app/oracle/SNAP/datafile/undotbs1.258.952163787
datafile 4 switched to datafile copy
input datafile copy RECID=11 STAMP=970772496 file name=/u01/app/oracle/SNAP/datafile/users.259.952163787
datafile 5 switched to datafile copy
input datafile copy RECID=12 STAMP=970772496 file name=/u01/app/oracle/SNAP/datafile/example.264.952164051
datafile 6 switched to datafile copy
input datafile copy RECID=13 STAMP=970772496 file name=/u01/app/oracle/SNAP/datafile/undotbs2.265.952164501

contents of Memory Script:
{
   set until scn  1052346;
   recover
   clone database
    delete archivelog
   ;
}
executing Memory Script

executing command: SET until clause

Starting recover at 14-MAR-2018 19:01:37
using channel ORA_AUX_DISK_1

starting media recovery

channel ORA_AUX_DISK_1: starting archived log restore to default destination
channel ORA_AUX_DISK_1: restoring archived log
archived log thread=1 sequence=12
channel ORA_AUX_DISK_1: reading from backup piece /mnt/hgfs/DB_Backup/DB11G_20180314_17_1_ARCHIVE.bkp
channel ORA_AUX_DISK_1: piece handle=/mnt/hgfs/DB_Backup/DB11G_20180314_17_1_ARCHIVE.bkp tag=DB_ARCHIVE
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:15
archived log file name=/u01/app/oracle/SNAP/recovery_area/SNAP/archivelog/2018_03_14/o1_mf_1_12_fbl9246k_.arc thread=1 sequence=12
channel ORA_AUX_DISK_1: starting archived log restore to default destination
channel ORA_AUX_DISK_1: restoring archived log
archived log thread=2 sequence=7
channel ORA_AUX_DISK_1: restoring archived log
archived log thread=2 sequence=8
channel ORA_AUX_DISK_1: restoring archived log
archived log thread=1 sequence=13
channel ORA_AUX_DISK_1: reading from backup piece /mnt/hgfs/DB_Backup/DB11G_20180314_18_1_ARCHIVE.bkp
channel ORA_AUX_DISK_1: piece handle=/mnt/hgfs/DB_Backup/DB11G_20180314_18_1_ARCHIVE.bkp tag=DB_ARCHIVE
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:01
archived log file name=/u01/app/oracle/SNAP/recovery_area/SNAP/archivelog/2018_03_14/o1_mf_2_7_fbl92lvo_.arc thread=2 sequence=7
channel clone_default: deleting archived log(s)
archived log file name=/u01/app/oracle/SNAP/recovery_area/SNAP/archivelog/2018_03_14/o1_mf_2_7_fbl92lvo_.arc RECID=17 STAMP=970772522
archived log file name=/u01/app/oracle/SNAP/recovery_area/SNAP/archivelog/2018_03_14/o1_mf_2_8_fbl92lwc_.arc thread=2 sequence=8
channel clone_default: deleting archived log(s)
archived log file name=/u01/app/oracle/SNAP/recovery_area/SNAP/archivelog/2018_03_14/o1_mf_1_12_fbl9246k_.arc RECID=16 STAMP=970772515
archived log file name=/u01/app/oracle/SNAP/recovery_area/SNAP/archivelog/2018_03_14/o1_mf_1_13_fbl92lw4_.arc thread=1 sequence=13
channel clone_default: deleting archived log(s)
archived log file name=/u01/app/oracle/SNAP/recovery_area/SNAP/archivelog/2018_03_14/o1_mf_1_13_fbl92lw4_.arc RECID=18 STAMP=970772522
channel clone_default: deleting archived log(s)
archived log file name=/u01/app/oracle/SNAP/recovery_area/SNAP/archivelog/2018_03_14/o1_mf_2_8_fbl92lwc_.arc RECID=19 STAMP=970772522
media recovery complete, elapsed time: 00:00:07
Finished recover at 14-MAR-2018 19:02:11
Oracle instance started

Total System Global Area     221331456 bytes

Fixed Size                     2251856 bytes
Variable Size                163578800 bytes
Database Buffers              50331648 bytes
Redo Buffers                   5169152 bytes

contents of Memory Script:
{
   sql clone "alter system set  db_name =
 ''SNAP'' comment=
 ''Reset to original value by RMAN'' scope=spfile";
   sql clone "alter system reset  db_unique_name scope=spfile";
   shutdown clone immediate;
   startup clone nomount;
}
executing Memory Script

sql statement: alter system set  db_name =  ''SNAP'' comment= ''Reset to original value by RMAN'' scope=spfile

sql statement: alter system reset  db_unique_name scope=spfile

Oracle instance shut down

connected to auxiliary database (not started)
Oracle instance started

Total System Global Area     221331456 bytes

Fixed Size                     2251856 bytes
Variable Size                163578800 bytes
Database Buffers              50331648 bytes
Redo Buffers                   5169152 bytes
sql statement: CREATE CONTROLFILE REUSE SET DATABASE "SNAP" RESETLOGS ARCHIVELOG
  MAXLOGFILES    192
  MAXLOGMEMBERS      3
  MAXDATAFILES     1024
  MAXINSTANCES    32
  MAXLOGHISTORY      292
 LOGFILE
  GROUP   1 ( '/u01/app/oracle/SNAP/logfile/group_1.261.952164009' ) SIZE 50 M  REUSE,
  GROUP   2 ( '/u01/app/oracle/SNAP/logfile/group_2.262.952164013' ) SIZE 50 M  REUSE
 DATAFILE
  '/u01/app/oracle/SNAP/datafile/system.256.952163783'
 CHARACTER SET AL32UTF8

sql statement: ALTER DATABASE ADD LOGFILE

  INSTANCE 'i2'
  GROUP   3 ( '/u01/app/oracle/SNAP/logfile/group_3.266.952164647' ) SIZE 50 M  REUSE,
  GROUP   4 ( '/u01/app/oracle/SNAP/logfile/group_4.267.952164651' ) SIZE 50 M  REUSE

contents of Memory Script:
{
   set newname for tempfile  1 to
 "/u01/app/oracle/SNAP/tempfile/temp.263.952164033";
   switch clone tempfile all;
   catalog clone datafilecopy  "/u01/app/oracle/SNAP/datafile/sysaux.257.952163785",
 "/u01/app/oracle/SNAP/datafile/undotbs1.258.952163787",
 "/u01/app/oracle/SNAP/datafile/users.259.952163787",
 "/u01/app/oracle/SNAP/datafile/example.264.952164051",
 "/u01/app/oracle/SNAP/datafile/undotbs2.265.952164501";
   switch clone datafile all;
}
executing Memory Script

executing command: SET NEWNAME

renamed tempfile 1 to /u01/app/oracle/SNAP/tempfile/temp.263.952164033 in control file

cataloged datafile copy
datafile copy file name=/u01/app/oracle/SNAP/datafile/sysaux.257.952163785 RECID=1 STAMP=970772557
cataloged datafile copy
datafile copy file name=/u01/app/oracle/SNAP/datafile/undotbs1.258.952163787 RECID=2 STAMP=970772557
cataloged datafile copy
datafile copy file name=/u01/app/oracle/SNAP/datafile/users.259.952163787 RECID=3 STAMP=970772557
cataloged datafile copy
datafile copy file name=/u01/app/oracle/SNAP/datafile/example.264.952164051 RECID=4 STAMP=970772557
cataloged datafile copy
datafile copy file name=/u01/app/oracle/SNAP/datafile/undotbs2.265.952164501 RECID=5 STAMP=970772557

datafile 2 switched to datafile copy
input datafile copy RECID=1 STAMP=970772557 file name=/u01/app/oracle/SNAP/datafile/sysaux.257.952163785
datafile 3 switched to datafile copy
input datafile copy RECID=2 STAMP=970772557 file name=/u01/app/oracle/SNAP/datafile/undotbs1.258.952163787
datafile 4 switched to datafile copy
input datafile copy RECID=3 STAMP=970772557 file name=/u01/app/oracle/SNAP/datafile/users.259.952163787
datafile 5 switched to datafile copy
input datafile copy RECID=4 STAMP=970772557 file name=/u01/app/oracle/SNAP/datafile/example.264.952164051
datafile 6 switched to datafile copy
input datafile copy RECID=5 STAMP=970772557 file name=/u01/app/oracle/SNAP/datafile/undotbs2.265.952164501

contents of Memory Script:
{
   Alter clone database open resetlogs;
}
executing Memory Script

database opened
Finished Duplicate Db at 14-MAR-2018 19:03:01

RMAN> exit


Recovery Manager complete.



Step:-11


Disable thread 2 redolog group and drop unnecessary redolog groups after creating new groups



16:28:15 SYS@DB11G>select THREAD#,STATUS,ENABLED,GROUPS,INSTANCE from gV$THREAD;

   THREAD# STATUS ENABLED      GROUPS INSTANCE
---------- ------ -------- ---------- --------------------------------------------------------------------------------
         1 OPEN   PUBLIC            4 DB11G
         2 CLOSED PUBLIC            2 DB11G2

16:28:36 SYS@DB11G>alter database disable thread 2;

Database altered.

16:29:44 SYS@DB11G>select THREAD#,STATUS,ENABLED,GROUPS,INSTANCE from gV$THREAD;

   THREAD# STATUS ENABLED      GROUPS INSTANCE
---------- ------ -------- ---------- --------------------------------------------------------------------------------
         1 OPEN   PUBLIC            4 DB11G
         2 CLOSED DISABLED          2 DB11G2



Afetr Adding SOme logfile group and Droping unnecessary redolog groups below is the final stattus



   INST_ID     GROUP#    THREAD#    SIZE_MB    MEMBERS STATUS
---------- ---------- ---------- ---------- ---------- ----------------
         1          1          1         20          1 CURRENT
         1          3          1         20          1 INACTIVE
         1          2          1         20          1 INACTIVE



Step:-12


Drop unused second undo tablespace




Tablespace                         Used MB     Free MB    Total MB  Pct. Free   PCT_USED
------------------------------ ----------- ----------- ----------- ---------- ----------
SYSAUX                                 524          36         560       6.43      93.57
UNDOTBS1                                94           1          95       1.05      98.95
USERS                                    3           2           5         40         60
SYSTEM                                 746           4         750        .53      99.47
EXAMPLE                                309           4         313       1.28      98.72
UNDOTBS2                                32          18          50         36         64

6 rows selected.

16:11:31 SYS@DB11G>show parameter undo

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
undo_management                      string      AUTO
undo_retention                       integer     900
undo_tablespace                      string      UNDOTBS1

16:12:46 SYS@DB11G>drop tablespace UNDOTBS2 including contents and datafiles;

Tablespace dropped.


Tablespace                         Used MB     Free MB    Total MB  Pct. Free   PCT_USED
------------------------------ ----------- ----------- ----------- ---------- ----------
SYSAUX                                 524          36         560       6.43      93.57
UNDOTBS1                                94           1          95       1.05      98.95
USERS                                    3           2           5         40         60
SYSTEM                                 746           4         750        .53      99.47
EXAMPLE                                309           4         313       1.28      98.72


TABLESPACE_NAME              FILE_ID FILE_NAME                                                       SIZE_GB AUT
------------------------- ---------- ------------------------------------------------------------ ---------- ---
USERS                              4 /u01/app/oracle/DB11G_DB/datafile/users01.dbf                .004882813 YES
UNDOTBS1                           3 /u01/app/oracle/DB11G_DB/datafile/undotbs01.dbf              .092773438 YES
SYSAUX                             2 /u01/app/oracle/DB11G_DB/datafile/sysaux01.dbf                  .546875 YES
SYSTEM                             1 /u01/app/oracle/DB11G_DB/datafile/system01.dbf               .732421875 YES
EXAMPLE                            5 /u01/app/oracle/DB11G_DB/datafile/example01.dbf              .305786133 YES



Step:-13


Check all the database files and status



NAME      OPEN_MODE            LOG_MODE     DATABASE_ROLE
--------- -------------------- ------------ ----------------
SNAP      READ WRITE           ARCHIVELOG   PRIMARY

INSTANCE_NAME    LOGINS     HOST_NAME            DB Startup Time
---------------- ---------- -------------------- -----------------------------
SNAP             ALLOWED    ora11gr2.localdomain 14-MAR-2018 19:38:41

NAME
--------------------------------------------------------------
/u01/app/oracle/SNAP/controlfile/control01.ctl

Tablespace                         Used MB     Free MB    Total MB  Pct. Free   PCT_USED
------------------------------ ----------- ----------- ----------- ---------- ----------
SYSAUX                                 527          33         560       5.89      94.11
UNDOTBS1                                94           1          95       1.05      98.95
USERS                                    3           2           5         40         60
SYSTEM                                 746           4         750        .53      99.47
EXAMPLE                                309           4         313       1.28      98.72

TABLESPACE_NAME              FILE_ID FILE_NAME                                                       SIZE_GB AUT
------------------------- ---------- ------------------------------------------------------------ ---------- ---
SYSTEM                             1 /u01/app/oracle/SNAP/datafile/system.256.952163783           .732421875 YES
SYSAUX                             2 /u01/app/oracle/SNAP/datafile/sysaux.257.952163785              .546875 YES
UNDOTBS1                           3 /u01/app/oracle/SNAP/datafile/undotbs1.258.952163787         .092773438 YES
USERS                              4 /u01/app/oracle/SNAP/datafile/users.259.952163787            .004882813 YES
EXAMPLE                            5 /u01/app/oracle/SNAP/datafile/example.264.952164051          .305786133 YES

TABLESPACE                       GB_TOTAL    GB_USED    GB_FREE
------------------------------ ---------- ---------- ----------
TEMP                               .03125          0     .03125

TABLESPACE_NAME              FILE_ID FILE_NAME                                                       SIZE_GB AUT
------------------------- ---------- ------------------------------------------------------------ ---------- ---
TEMP                               1 /u01/app/oracle/SNAP/tempfile/temp.263.952164033                 .03125 YES

   INST_ID     GROUP#    THREAD#    SIZE_MB    MEMBERS STATUS
---------- ---------- ---------- ---------- ---------- ----------------
         1          1          1         30          1 INACTIVE
         1          3          1         30          1 INACTIVE
         1          2          1         30          1 CURRENT

   INST_ID     GROUP# MEMBER
---------- ---------- ------------------------------------------------------------
         1          1 /u01/app/oracle/SNAP/logfile/redolog01.log
         1          2 /u01/app/oracle/SNAP/logfile/redolog02.log
         1          3 /u01/app/oracle/SNAP/logfile/redolog03.log





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