Manually Converting Non-RAC DB to RAC DB

In previous articles, we have seen various methods of converting Non-RAC database to RAC database.

In this article, we will convert non-RAC database to RAC database using RMAN backup-restore utility.

Single Instance DB Name RAC DB name RAC Instance Node RAC Instance Name RAC Node Name
MGR MGR Node 1 db1 RAC1
Node 2 db2 RAC2

Step 1: Check details of Single Instance Database :

SQL> select name,open_mode from v$database;

NAME	  OPEN_MODE
--------- --------------------
MGR	      READ WRITE

SQL>

Step 2 : Take backup of database :

RMAN> backup database;
 
Starting backup at 26-MAR-18
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=34 device type=DISK
channel ORA_DISK_1: starting full datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set
input datafile file number=00001 name=/u01/oracle/oradata/mgr/system01.dbf
input datafile file number=00002 name=/u01/oracle/oradata/mgr/sysaux01.dbf
input datafile file number=00003 name=/u01/oracle/oradata/mgr/undotbs01.dbf
input datafile file number=00004 name=/u01/oracle/oradata/mgr/users01.dbf
channel ORA_DISK_1: starting piece 1 at 26-MAR-18
channel ORA_DISK_1: finished piece 1 at 26-MAR-18
piece handle=/u01/oracle/fast_recovery_area/MGR/backupset/2018_03_26/o1_mf_nnndf_TAG20180326T181929_fckv2sxd_.bkp tag=TAG20180326T181929 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:01:26
Finished backup at 26-MAR-18
 
Starting Control File and SPFILE Autobackup at 26-MAR-18
piece handle=/u01/oracle/fast_recovery_area/MGR/autobackup/2018_03_26/o1_mf_s_971806856_fckv5jqw_.bkp comment=NONE
Finished Control File and SPFILE Autobackup at 26-MAR-18
 
RMAN>

Step 3 : Make directory in RAC node for recovery area:

[oracle@rac1 oracle]$ mkdir -p /u01/app/oracle/fast_recovery_area/MGR

Step 4: Transfer backupset and autobackup to rac node.

[oracle@localhost 2018_03_26]$ scp o1_mf_nnndf_TAG20180326T181929_fckv2sxd_.bkp 
192.168.1.181:/u01/app/oracle/fast_recovery_area/MGR/
The authenticity of host '192.168.1.181 (192.168.1.181)' can't be established.
RSA key fingerprint is 2c:c5:7c:5f:7a:b6:66:c0:7c:38:ce:8d:35:b2:87:2f.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '192.168.1.181' (RSA) to the list of known hosts.
oracle@192.168.1.181's password: 
o1_mf_nnndf_TAG20180326T181929_fckv2sxd_.bkp                100% 1014MB  13.7MB/s   01:14    
[oracle@localhost 2018_03_26]$ scp /u01/oracle/fast_recovery_area/MGR/autobackup/2018_03_26/
o1_mf_s_971806856_fckv5jqw_.bkp 192.168.1.181:/u01/app/oracle/fast_recovery_area/MGR/
oracle@192.168.1.181's password: 
o1_mf_s_971806856_fckv5jqw_.bkp              100% 9600KB   9.4MB/s   00:01    
[oracle@localhost 2018_03_26]$

Step 5 : Transfer spfile to RAC1 node , make directories :

[oracle@rac1 ~]$ mkdir -p /u01/oracle/admin/mgr/adump
[oracle@rac1 ~]$ mkdir -p /u01/oracle/admin/mgr/dpdump
[oracle@rac1 ~]$ mkdir -p /u01/oracle/admin/mgr/pfile
[oracle@rac1 ~]$  mkdir -p /u01/oracle/fast_recovery_area/MGR
[oracle@rac1 ~]$ mkdir -p /u01/oracle/admin/mgr/pfile
[oracle@rac1 ~]$ mkdir -p /u01/arc/mgr
[oracle@rac1 .ssh]$ rsync -azvrh --progress 192.168.1.10:/u01/oracle/product/11.2.0/db_1/dbs/spfilemgr.ora $ORACLE_HOME/dbs
receiving incremental file list
spfilemgr.ora
       2.56K 100%    2.44MB/s    0:00:00 (xfer#1, to-check=0/1)
 
sent 30 bytes  received 715 bytes  1.49K bytes/sec
total size is 2.56K  speedup is 3.44

Step 6 : Startup database in nomount stage,  Restore control file from autobackup :

RMAN> startup nomount

Oracle instance started

Total System Global Area     392495104 bytes

Fixed Size                     2253584 bytes
Variable Size                176164080 bytes
Database Buffers             209715200 bytes
Redo Buffers                   4362240 bytes

RMAN> restore controlfile from autobackup;

Starting restore at 04-APR-18
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=19 device type=DISK

recovery area destination: /u01/oracle/fast_recovery_area
database name (or database unique name) used for search: MGR
channel ORA_DISK_1: AUTOBACKUP /u01/oracle/fast_recovery_area/MGR/autobackup/2018_03_26/o1_mf_s_971806856_fckv5jqw_.bkp found in the recovery area
AUTOBACKUP search with format "%F" not attempted because DBID was not set
channel ORA_DISK_1: restoring control file from AUTOBACKUP /u01/oracle/fast_recovery_area/MGR/autobackup/2018_03_26/o1_mf_s_971806856_fckv5jqw_.bkp
channel ORA_DISK_1: control file restore from AUTOBACKUP complete
output file name=/u01/oracle/oradata/mgr/control01.ctl
output file name=/u01/oracle/oradata/mgr/control02.ctl
Finished restore at 04-APR-18

RMAN> alter database mount;

database mounted
released channel: ORA_DISK_1

Step 7 : Catalog backup files :

RMAN> catalog start with '/u01/app/oracle/fast_recovery_area/MGR/';

Starting implicit crosscheck backup at 04-APR-18
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=19 device type=DISK
Crosschecked 1 objects
Finished implicit crosscheck backup at 04-APR-18

Starting implicit crosscheck copy at 04-APR-18
using channel ORA_DISK_1
Finished implicit crosscheck copy at 04-APR-18

searching for all files in the recovery area
cataloging files...
no files cataloged

searching for all files that match the pattern /u01/app/oracle/fast_recovery_area/MGR/

List of Files Unknown to the Database
=====================================
File Name: /u01/app/oracle/fast_recovery_area/MGR/o1_mf_s_971806856_fckv5jqw_.bkp
File Name: /u01/app/oracle/fast_recovery_area/MGR/o1_mf_nnndf_TAG20180326T181929_fckv2sxd_.bkp

Do you really want to catalog the above files (enter YES or NO)? YES
cataloging files...
cataloging done

List of Cataloged Files
=======================
File Name: /u01/app/oracle/fast_recovery_area/MGR/o1_mf_s_971806856_fckv5jqw_.bkp
File Name: /u01/app/oracle/fast_recovery_area/MGR/o1_mf_nnndf_TAG20180326T181929_fckv2sxd_.bkp

Step 8 : Restore database ;

RMAN> restore database;

Starting restore at 04-APR-18
using channel ORA_DISK_1

channel ORA_DISK_1: starting datafile backup set restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_DISK_1: restoring datafile 00001 to /u01/oracle/oradata/mgr/system01.dbf
channel ORA_DISK_1: restoring datafile 00002 to /u01/oracle/oradata/mgr/sysaux01.dbf
channel ORA_DISK_1: restoring datafile 00003 to /u01/oracle/oradata/mgr/undotbs01.dbf
channel ORA_DISK_1: restoring datafile 00004 to /u01/oracle/oradata/mgr/users01.dbf
channel ORA_DISK_1: reading from backup piece /u01/app/oracle/fast_recovery_area/MGR/o1_mf_nnndf_TAG20180326T181929_fckv2sxd_.bkp
channel ORA_DISK_1: piece handle=/u01/app/oracle/fast_recovery_area/MGR/o1_mf_nnndf_TAG20180326T181929_fckv2sxd_.bkp tag=TAG20180326T181929
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: restore complete, elapsed time: 00:01:06
Finished restore at 04-APR-18

RMAN>

Step 9 : Recover database :

RMAN> restore database;

Starting restore at 04-APR-18
using channel ORA_DISK_1

channel ORA_DISK_1: starting datafile backup set restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_DISK_1: restoring datafile 00001 to /u01/oracle/oradata/mgr/system01.dbf
channel ORA_DISK_1: restoring datafile 00002 to /u01/oracle/oradata/mgr/sysaux01.dbf
channel ORA_DISK_1: restoring datafile 00003 to /u01/oracle/oradata/mgr/undotbs01.dbf
channel ORA_DISK_1: restoring datafile 00004 to /u01/oracle/oradata/mgr/users01.dbf
channel ORA_DISK_1: reading from backup piece /u01/app/oracle/fast_recovery_area/MGR/o1_mf_nnndf_TAG20180326T181929_fckv2sxd_.bkp
channel ORA_DISK_1: piece handle=/u01/app/oracle/fast_recovery_area/MGR/o1_mf_nnndf_TAG20180326T181929_fckv2sxd_.bkp tag=TAG20180326T181929
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: restore complete, elapsed time: 00:01:06
Finished restore at 04-APR-18

RMAN>

Step 10 : Open database using “open resetlogs” option .

RMAN> alter database open resetlogs;

database opened

RMAN>

Here we have restore databse from non-rac node to rac node in normal file System.

Part – 2 is Convert Normal File System to ASM :

Convert Non ASM database to ASM Database using Duplicate Database command

Part 3 : Convert Single Instance Database to Oracle RAC :

Convert Single Instance Database to Oracle RAC

Stay tuned for More articles on Oracle RAC 

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About The Author

I am 11g OCP and OCE(RAC and GRID Infrastructure). Currently working as Oracle Database Administrator at _VOIS and Blogger (Freelancer) at Oracle-help . Previously I worked with Acute Informatics pvt ltd. and Mobile Tornado where I handled Banking Data Migration , created DR using log shipping , Golden Gate and Data Guard. I have experience of handling planned and unplanned DB role switchover and failovers and monitoring and troubleshooting Database Performance. Key skills : RMAN , GG , DG , RAC , Virtualization in OVMM.I have experience in Banking and Telecom domain. Reach me at : https://www.linkedin.com/in/jagruti-jasleniya

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