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RMAN active cloning from RAC TO RAC DBACLASS

RMAN active cloning from RAC TO RAC in Oracle 12c. Steps are almost similar to standalone, with some change. rman connect target sys/oracle@SOUCE_TNS auxiliary sys/oracle

oracle clusteringintermediate
by OracleDba
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1

Overview

Below are the steps for doing RMAN from RAC to RAC. Steps will be same from NON RAC TO RAC . > For standalone database  – Rman active cloning for standalone 12c database For standalone database  – Rman active cloning for standalone 12c database First we will restore the database to only one node1 and later we will convert to RAC. All the activities need to be done target database only. 1. Create a static listener on the target host(NODE1)( From ORACLE_HOME)
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Section 2

2. Add tns entry of both source and target db in tnsnames.ora file(TARGET_HOST NODE 1 ) 3. Copy the pfile from source db and update the below parameters.

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LISTENER_CLONEDB =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = clonedb1-host)(PORT = 1527))
)

SID_LIST_LISTENER_CLONEDB =
(SID_LIST =
(SID_DESC =
(ORACLE_HOME = /oracle/app/oracle/product/12.1.0.2/dbhome_1)
(SID_NAME = CLONEDB1)
)
)

lsnrctl start LISTENER_CLONEDB

-- SOUCE DB TNS
PRODB =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = prodb1-host)(PORT = 1521))
)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = PRODB)
)
)

-- TARGET DB TNS
CLONEDB =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = clonedb1-host)(PORT = 1527))
)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = CLONEDB)
)
)
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Section 3

SOURCE PFILE LOOKS LIKE Now change the db name to CLONEDB and instance names to CLONEDB1,CLONEDB2 in the pfile. Apart from this, we need to do the few other changes. and save it as initCLONEDB1.ora in $ORACLE_HOME/dbs location. *.log_archive_dest_1 *.db_create_file_dest *.db_create_online_log_dest_1=’+REDOA’ *.control_files=’+REDOA’,’+REDOB’,’+DATA’ *.cluster_database=FALSE Now the target db pfile will look as below.

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*.cluster_database=TRUE
*.compatible='12.1.0.2.0'
*.control_files='+REDOA/PRODB/CONTROLFILE/current.256.911574607','+REDOB/PRODB/CONTROLFILE/current.256.911574607','+DATA/PRODB/CONTROLFILE/current.366.926770445'#Restore Controlfile
*.db_block_size=8192
*.db_domain=''
*.db_files=5000
*.db_name='PRODB'
*.diagnostic_dest='/oradbtrace'
PRODB1.instance_number=1
PRODB2.instance_number=2
*.large_pool_size=20g
*.log_archive_dest_1='LOCATION=+ARCH'
*.log_archive_dest_state_1='ENABLE'
*.open_cursors=4500
*.pga_aggregate_target=40G
*.processes=6000
*.remote_listener='prodb-scan.stc.com.sa:1522'
*.remote_login_passwordfile='exclusive'
*.sga_max_size=150G
*.sga_target=150G
*.shared_pool_size=21474836480
PRODB2.thread=2
PRODB1.thread=1
*.undo_retention=14400
PRODB2.undo_tablespace='UNDOTBS1'
PRODB1.undo_tablespace='UNDOTBS2'
4

Section 4

4. Create password file on source and target db:(password should be same) Now create password file on source and target db with same sys password. 5. Now start the target database in nomount stage:

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cat initCLONEDB1.ora

*.cluster_database=FALSE
*.compatible='12.1.0.2.0'
*.control_files='+REDOA','+REDOB','+DATA'
*.db_block_size=8192
*.db_create_file_dest='+DATA'
*.db_create_online_log_dest_1='+REDOA'
*.db_create_online_log_dest_2='+REDOB'
*.db_domain=''
*.db_files=5000
*.db_name='CLONEDB'
*.diagnostic_dest='/oradbtrace'
CLONEDB1.instance_number=1
CLONEDB2.instance_number=2
*.large_pool_size=20g
*.log_archive_dest_1='LOCATION=+ARCH'
*.log_archive_dest_state_1='ENABLE'
*.open_cursors=4500
*.pga_aggregate_target=40G
*.processes=6000
*.remote_listener='clonedb-scan.stc.com.sa:1522'
*.remote_login_passwordfile='exclusive'
*.sga_max_size=150G
*.sga_target=150G
*.shared_pool_size=21474836480
CLONEDB2.thread=2
CLONEDB1.thread=1
*.undo_retention=14400
CLONEDB2.undo_tablespace='UNDOTBS1'
CLONEDB1.undo_tablespace='UNDOTBS2'

-- SOURCE DB ( PRODB)

cd $ORACLE_HOME/dbs
orapwd file=orapw$ORACLE_SID password=oracle force=y

-- TARGET DB ( CLONEDB)

cd $ORACLE_HOME/dbs
orapwd file=orapw$ORACLE_SID password=oracle force=y
5

Section 5

startup nomount pfile=initCLONEDB1.ora 6. Test the connectivity to target and auxiliary:[ TARGET HOST] For big databases it is recommended to create a shell script and run in backuground as below.

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rman target sys/oracle#51234@PRODB auxiliary sys/oracle#51234@CLONEDB 


Recovery Manager: Release 12.1.0.2.0 - Production on Tue Feb 21 19:52:37 2017
Copyright (c) 1982, 2014, Oracle and/or its affiliates.  All rights reserved.

connected to target database: PRODB (DBID=678234706)
connected to auxiliary database: CLONEDB (not mounted)
6

Section 6

7 . Prepare the rman run script:[TARGET HOST] 8. Prepare the shell script.[TARGET HOST]

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cat /export/home/oracle/rman_clone.cmd

run
{
allocate channel src1 type disk;
allocate channel src2 type disk;
allocate channel src3 type disk;
allocate channel src4 type disk;
allocate auxiliary channel aux1 type disk;
allocate auxiliary channel aux2 type disk;
allocate auxiliary channel aux3 type disk;
allocate auxiliary channel aux4 type disk;
allocate auxiliary channel aux5 type disk;
allocate auxiliary channel aux6 type disk;
duplicate target database to CLONEDB from active database USING  BACKUPSET ;
}

cat rman_clone_CLONEDB.sh
#!/bin/ksh
rman target sys/oracle#51234@PRODB auxiliary sys/oracle#51234@CLONEDB msglog /export/home/oracle/rman_clone2_log cmdfile=/export/home/oracle/rman_clone.cmd
7

Section 7

9. Now run the script with nohup mode:[TARGET DB] 10. Monitor the log — FEW PART OF THE LOG

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nohup sh rman_clone_CLONEDB.sh &
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Section 8

Complete log: Now the database is up and available but only on one node . We need to register the database and convert it into a rac database. 11. Make cluster parameter to true:

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Recovery Manager: Release 12.1.0.2.0 - Production on Tue Feb 21 17:18:48 2017

Copyright (c) 1982, 2014, Oracle and/or its affiliates.  All rights reserved.

connected to target database: PRODB (DBID=678234706)
connected to auxiliary database: CLONEDB (not mounted)

RMAN> run
2> {
3> allocate channel src1 type disk;
4> allocate channel src2 type disk;
5> allocate channel src3 type disk;
6> allocate channel src4 type disk;
7> allocate auxiliary channel aux1 type disk;
8> allocate auxiliary channel aux2 type disk;
9> allocate auxiliary channel aux3 type disk;
10> allocate auxiliary channel aux4 type disk;
11> allocate auxiliary channel aux5 type disk;
12> allocate auxiliary channel aux6 type disk;
13> duplicate target database to CLONEDB from active database USING  BACKUPSET ;
14> }
15>
16>
using target database control file instead of recovery catalog
allocated channel: src1
channel src1: SID=2596 device type=DISK

allocated channel: src2
channel src2: SID=2847 device type=DISK

allocated channel: src3
channel src3: SID=3207 device type=DISK

allocated channel: src4
channel src4: SID=2539 device type=DISK

allocated channel: aux1
channel aux1: SID=5923 device type=DISK

allocated channel: aux2
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input datafile copy RECID=196 STAMP=936563077 file name=+DATA/CLONEDB/DATAFILE/users.352.936559475
datafile 96 switched to datafile copy
input datafile copy RECID=197 STAMP=936563077 file name=+DATA/CLONEDB/DATAFILE/users.353.936559477
datafile 97 switched to datafile copy
input datafile copy RECID=198 STAMP=936563077 file name=+DATA/CLONEDB/DATAFILE/users.354.936559491
datafile 98 switched to datafile copy
input datafile copy RECID=199 STAMP=936563077 file name=+DATA/CLONEDB/DATAFILE/users.355.936559587
datafile 99 switched to datafile copy
input datafile copy RECID=200 STAMP=936563077 file name=+DATA/CLONEDB/DATAFILE/sysaux.356.936559587
datafile 100 switched to datafile copy
input datafile copy RECID=201 STAMP=936563077 file name=+DATA/CLONEDB/DATAFILE/system.357.936559595
datafile 101 switched to datafile copy
input datafile copy RECID=202 STAMP=936563077 file name=+DATA/CLONEDB/DATAFILE/undotbs1.358.936559689
datafile 102 switched to datafile copy
input datafile copy RECID=203 STAMP=936563077 file name=+DATA/CLONEDB/DATAFILE/undotbs2.359.936559925
datafile 103 switched to datafile copy
input datafile copy RECID=204 STAMP=936563077 file name=+DATA/CLONEDB/DATAFILE/users.360.936560101
Reenabling controlfile options for auxiliary database
Executing: alter database add supplemental log data
Executing: alter database add supplemental log data(PRIMARY KEY, UNIQUE) columns
Executing: alter database enable block change tracking

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

database opened
Cannot remove created server parameter file
Finished Duplicate Db at 21-FEB-17
released channel: src1
released channel: src2
released channel: src3
released channel: src4

alter system set cluster_database=TRUE scope=spfile sid='*';
9

Section 9

12. Create spfile in asm disk 13. Register the database and modify the configuration

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create pfile='/export/home/oracle/test.ora' from spfile;

-- Now create the spfile in ASM dis

create spfile='+DATA/CLONEDB/PARAMETERFILE/spfileCLONEDB.ora' from pfile;

Go to $ORACLE_HOME/dbs

Update initCLONEDB1.ora as below

cat initCLONEDB1.ora
SPFILE='+DATA/CLONEDB/PARAMETERFILE/spfileCLONEDB.ora'

Same thing do it on node 2:(upgrade initCLONEDB2.ora)

cat initCLONEDB2.ora
SPFILE='+DATA/CLONEDB/PARAMETERFILE/spfileCLONEDB.ora'

srvctl add database -db CLONEDB -oraclehome /oracle/app/oracle/product/12.1.0.2/dbhome_1
srvctl add instance -d CLONEDB -i CLONEDB1 -node clonedb1-host
srvctl add instance -d CLONEDB -i CLONEDB2 -node clonedb1-host
srvctl modify database -d CLONEDB -spfile +DATA/CLONEDB/PARAMETERFILE/spfileCLONEDB.ora

srvctl config database -d CLONEDB
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Section 10

14. Now shutdown the database on node 1 and restart using srvctl. Now RAC database is ready for use. RESTORE FAILED RMAN ACTIVE CLONE:

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shutdown immediate;

srvctl start database -d CLONEDB

-- Check crs status

crsctl stat res -t

ora.clonedb.db
1 ONLINE ONLINE sec54-1 Open,STABLE
2 ONLINE ONLINE sec55-1 Open,STABLE
11

Section 11

While restoring a big database, cloning might fail in the mid due to a network issue. In that case, no need to start from the beginning. Follow below steps to resume the restore.It will skip the copied files, 1. Shutdown the database 2. Remove the spfile, which rman has created during the duplication 3. Start the database with nomount stage(using the original init file, which you have used , which starting the database initially) 4. Run the same exact rman duplication script. 5. Rman will detect the files which were copied during the previous cloning process and those will be skipped.It will only restore the new datafile which was not copied previously. It will show warning like below: Using previous duplicated file +DATA/CLONEDB/DATAFILE/undotbs2.628.936641735 for datafile 78 with checkpoint SCN of 11712137096850. You can ignore. If the database version is 11g, then use the below rman run block:(step 7 ) > For any suggestion to this article, Please provide in comment section. For any suggestion to this article, Please provide in comment section.

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run
{
allocate channel src1 type disk;
allocate channel src2 type disk;
allocate channel src3 type disk;
allocate channel src4 type disk;
allocate auxiliary channel aux1 type disk;
allocate auxiliary channel aux2 type disk;
allocate auxiliary channel aux3 type disk;
allocate auxiliary channel aux4 type disk;
allocate auxiliary channel aux5 type disk;
allocate auxiliary channel aux6 type disk;
duplicate target database to CLONEDB from active database ;
}
12

Section 12

For any suggestion to this article, Please provide in comment section.

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