Skip to main content

How to Synchronize Physical Standby database using RMAN incremental Backup


<<Back to Oracle DataGuard Main Page

How to Roll Forward a standby database using RMAN incremental backup oracle

to roll forward the standby database suing RMAN incremental backup from primary, the first thing which you have to find out is the correct SCN number to take the incremental backup
Step1> Find the correct SCN from Standby for Incremental Backup

How to find the correct SCN for Incremental backup to Roll Forward a standby database

On Standby database
SQL>  select current_scn from v$database
       CURRENT_SCN
------------------
       52336213728

Check The minimum SCN from x$kcvfh
SQL> select min(fhscn) from x$kcvfh;
MIN(FHSCN)
----------------
52315851745

SQL> select min(f.fhscn) from x$kcvfh f, v$datafile d where f.hxfil =d.file# and d.enabled != 'READ ONLY';
MIN(F.FHSCN)
----------------
52334553164

The lowest SCN from all 3 above is your target (in my case it is 52334553164). Just take this one and perform the incremental backup on primary database from this SCN. To cross verify you can optionally do following
Stop the managed recovery at standby database
SQL> recover managed standby database cancel;
Start the manual recovery to verify the SCN again
SQL> recover standby  database;
ORA-00279: change 52334553164 generated at 12/11/2018 15:26:19 needed for
thread 2
ORA-00289: suggestion :
/u01/app/oracle/product/12.1.0.2/dbp1/dbs/arch2_1503_965052383.dbf
ORA-00280: change 52334553164 for thread 2 is in sequence #1503

As you can see the standby database is looking the redo from SCN 52334553164 which is exactly the SCN you identified above

Step2: Perform the Incremental Backup from the SCN identified above

connect to the PRIMARY database and create an incremental backup
$rman target /

RMAN > BACKUP INCREMENTAL FROM SCN 52334553164 DATABASE FORMAT '/tmp/ForStandby_%U' tag 'FORSTANDBY';

Step3: Transfer the backup pieces to standby database server

Transfer all backup sets created on the primary database server to the standby.
In my case I copied the backup pieces on standby at /u01/app/oracle/stage/bkp/bkp/ location
Step4: Catalog the backup pieces
On the STANDBY catalog the backup pieces:
$rman target /

RMAN> CATALOG START WITH '/u01/app/oracle/stage/bkp/bkp/'; 

using target database control file instead of recovery catalog

searching for all files that match the pattern /u01/app/oracle/stage/bkp/bkp/

List of Files Unknown to the Database

=====================================
File Name: /u01/app/oracle/stage/bkp/bkp/ForStandby_tntklsc0_1_1
File Name: /u01/app/oracle/stage/bkp/bkp/ForStandby_tmtklsbt_1_1
File Name: /u01/app/oracle/stage/bkp/bkp/ForStandby_trtklsce_1_1
File Name: /u01/app/oracle/stage/bkp/bkp/ForStandby_totklsc7_1_1
File Name: /u01/app/oracle/stage/bkp/bkp/ForStandby_tptklsca_1_1

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/stage/bkp/bkp/ForStandby_tntklsc0_1_1
File Name: /u01/app/oracle/stage/bkp/bkp/ForStandby_tmtklsbt_1_1
File Name: /u01/app/oracle/stage/bkp/bkp/ForStandby_trtklsce_1_1
File Name: /u01/app/oracle/stage/bkp/bkp/ForStandby_totklsc7_1_1

File Name: /u01/app/oracle/stage/bkp/bkp/ForStandby_tptklsca_1_1

Step5: Recover the STANDBY database with the incremental backup
RMAN>recover database noredo;
Starting recover at 13-DEC-18
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=479 device type=DISK
channel ORA_DISK_1: starting incremental datafile backup set restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
destination for restore of datafile 00001: +DG_DATA/TSTDB1PS/DATAFILE/system.265.994761941
destination for restore of datafile 00003: +DG_DATA/TSTDB1PS/DATAFILE/sysaux.264.994761941
..............................................................................................
..............................................................................................
channel ORA_DISK_1: reading from backup piece /u01/app/oracle/stage/bkp/bkp/ForStandby_tmtklsbt_1_1
channel ORA_DISK_1: piece handle=/u01/app/oracle/stage/bkp/bkp/ForStandby_tmtklsbt_1_1 tag=FORSTANDBY
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: restore complete, elapsed time: 00:00:01

Finished recover at 13-DEC-18

Step6: Backup the controlfile from Primary for Standby 
RMAN> BACKUP CURRENT CONTROLFILE FOR STANDBY FORMAT '/tmp/ForStandbyCTRL.bck';
Step7: copy the controlfile backup from primary to standby database server
Step8: Restore the controlfile on standby database 
SQL> shut immediate;
ORA-01109: database not open
Database dismounted.
ORACLE instance shut down.
SQL> startup nomount;
ORACLE instance started.
Total System Global Area 4026531840 bytes
Fixed Size                  2931856 bytes
Variable Size             989856624 bytes
Database Buffers         3019898880 bytes
Redo Buffers               13844480 bytes
$ rman target /
RMAN>RESTORE STANDBY CONTROLFILE FROM '/u01/app/oracle/stage/bkp/bkp/ForStandbyCTRL.bck'; 
Starting restore at 13-DEC-18
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=12 device type=DISK
channel ORA_DISK_1: restoring control file
channel ORA_DISK_1: restore complete, elapsed time: 00:00:01
output file name=/u01/app/oracle/stage/bkp/bkp/stby.ctl
Finished restore at 13-DEC-18
Step9: Mount the standby database
SQL> shut immediate;
ORA-01507: database not mounted
ORACLE instance shut down.
SQL> startup mount;
ORACLE instance started.
Total System Global Area 4026531840 bytes
Fixed Size                  2931856 bytes
Variable Size             989856624 bytes
Database Buffers         3019898880 bytes
Redo Buffers               13844480 bytes
Database mounted.

NOTE: If ASM is not in use jump directly on 
 In case ASM is used the datafile names between Primary can standby may be different and since we brought the controlfile from primary the data file at standby is not know to this control file and you must update the datafile name in control file with the actual data file name in standby 
Step10: Rename the datafile in controlfile to pint to the actual data files
$ rman target /
RMAN> CATALOG START WITH '+DG_DATA/TSTDB1PS/DATAFILE/';

using target database control file instead of recovery catalog
searching for all files that match the pattern +DG_DATA/TSTDB1PS/DATAFILE/

List of Files Unknown to the Database
=====================================
File Name: +DG_DATA/TSTDB1PS/DATAFILE/sysaux.264.994761941
File Name: +DG_DATA/TSTDB1PS/DATAFILE/system.265.994761941
File Name: +DG_DATA/TSTDB1PS/DATAFILE/undotbs2.266.994761943
File Name: +DG_DATA/TSTDB1PS/DATAFILE/undotbs1.267.994761943
File Name: +DG_DATA/TSTDB1PS/DATAFILE/audit_data.268.994761943
File Name: +DG_DATA/TSTDB1PS/DATAFILE/users.269.994761943

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

List of Cataloged Files
=======================
File Name: +DG_DATA/TSTDB1PS/DATAFILE/sysaux.264.994761941
File Name: +DG_DATA/TSTDB1PS/DATAFILE/system.265.994761941
File Name: +DG_DATA/TSTDB1PS/DATAFILE/undotbs2.266.994761943
File Name: +DG_DATA/TSTDB1PS/DATAFILE/undotbs1.267.994761943
File Name: +DG_DATA/TSTDB1PS/DATAFILE/audit_data.268.994761943
File Name: +DG_DATA/TSTDB1PS/DATAFILE/users.269.994761943

RMAN>  SWITCH DATABASE TO COPY;
datafile 1 switched to datafile copy "+DG_DATA/TSTDB1PS/DATAFILE/system.265.994761941"
datafile 3 switched to datafile copy "+DG_DATA/TSTDB1PS/DATAFILE/sysaux.264.994761941"
datafile 4 switched to datafile copy "+DG_DATA/TSTDB1PS/DATAFILE/undotbs1.267.994761943"
.......................................................................................
.......................................................................................
Step11:  Start the Recovery
Start the MRP process on standby
SQL> RECOVER MANAGED STANDBY DATABASE DISCONNECT FROM SESSION;

Comments

Popular posts from this blog

How to Power On/off Oracle Exadata Machine

<<Back to Exadata Main Page How to Power On/off Oracle Exadata Machine Oracle Exadata machines can be powered on/off either by pressing the power button on front of the server or by logging in to the ILOM interface. Powering on servers using  button on front of the server The power on sequence is as follows. 1. Start Rack, including switches  Note:- Ensure the switches have had power applied for a few minutes to complete power on  configuration before starting Exadata Storage Servers 2.Start Exadata Storage Servers  Note:- Ensure all Exadata Storage Servers complete the boot process before starting the   database servers 3. Start Database Servers Powering On Servers Remotely using ILOM The ILOM can be accessed using the Web console, the command-line interface (CLI), IPMI, or SNMP. For example, to apply power to server dm01cel01 using IPMI, where dm01cel01-ilom is the host name of the ILOM for the server to be powered on, run the

How to Find VIP of an Oracle RAC Cluster

<<Back to Oracle RAC Main Page How to Find Out VIP of an Oracle RAC Cluster Login clusterware owner (oracle) and execute the below command to find out the VIP hostname used in Oracle RAC $ olsnodes -i node1     node1-vip node2     node2-vip OR $ srvctl config nodeapps -viponly Network 1 exists Subnet IPv4: 10.0.0.0/255.255.0.0/bondeth0, static Subnet IPv6: Ping Targets: Network is enabled Network is individually enabled on nodes: Network is individually disabled on nodes: VIP exists: network number 1, hosting node node1 VIP Name: node1-vip VIP IPv4 Address: 10.0.0.1 VIP IPv6 Address: VIP is enabled. VIP is individually enabled on nodes: VIP is individually disabled on nodes: VIP exists: network number 1, hosting node node2 VIP Name: node2-vip VIP IPv4 Address: 10.0.0.2 VIP IPv6 Address: VIP is enabled. VIP is individually enabled on nodes: VIP is individually disabled on nodes:

ORA-28374: typed master key not found in wallet

<<Back to Oracle DB Security Main Page ORA-46665: master keys not activated for all PDBs during REKEY SQL> ADMINISTER KEY MANAGEMENT SET KEY FORCE KEYSTORE IDENTIFIED BY xxxx WITH BACKUP CONTAINER = ALL ; ADMINISTER KEY MANAGEMENT SET KEY FORCE KEYSTORE IDENTIFIED BY xxxx WITH BACKUP CONTAINER = ALL * ERROR at line 1: ORA-46665: master keys not activated for all PDBs during REKEY I found following in the trace file REKEY: Create Key in PDB 3 resulted in error 46658 *** 2019-02-06T15:27:04.667485+01:00 (CDB$ROOT(1)) REKEY: Activation of Key AdnU5OzNP08Qv1mIyXhP/64AAAAAAAAAAAAAAAAAAAAAAAAAAAAA in PDB 3 resulted in error 28374 REKEY: Keystore needs to be restored from the REKEY backup.Aborting REKEY! Cause: All this hassle started because I accidently deleted the wallet and all wallet backup files too and also forgot the keystore password. There was no way to restore the wallet back. Fortunately in my case the PDB which had encrypted data was supposed to be deco

ORA-16905: The member was not enabled yet

<<Back to Oracle DataGuard Main Page ORA-16905 Physical Standby Database is disabled DGMGRL> show configuration; Configuration - DG_ORCL1P   Protection Mode: MaxPerformance   Members:   ORCL1PP - Primary database     ORCL1PS - Physical standby database (disabled)       ORA-16905: The member was not enabled yet. Fast-Start Failover:  Disabled Configuration Status: SUCCESS   (status updated 58 seconds ago) DGMGRL> DGMGRL> enable database 'ORCL1PS'; Enabled. DGMGRL>  show configuration; Configuration - DG_ORCL1P   Protection Mode: MaxPerformance   Members:   ORCL1PP - Primary database     ORCL1PS - Physical standby database Fast-Start Failover:  Disabled Configuration Status: SUCCESS   (status updated 38 seconds ago)

How to Switch Log File from All Instances in RAC

<<Back to Oracle RAC Main Page Switch The Log File of All Instances in Oracle RAC. In many cases you need to switch the logfile of the database. You can switch logfile using alter system switch logfile command but if you want to switch the logfile from all the instances you need to execute the command on all the instances individually and therefore you must login on all the instances. You can avoid this and switch logfile of all instances by just running the below command from any of the instance in RAC database SQL> ALTER SYSTEM SWITCH ALL LOGFILE;   System altered.

ORA-65104: operation not allowed on an inactive pluggable database alter pluggable database open

<<Back to DB Administration Main Page ORA-65104: operation not allowed on an inactive pluggable database SQL> alter pluggable database TEST_CLON open; alter pluggable database TEST_CLON open * ERROR at line 1: ORA-65104: operation not allowed on an inactive pluggable database Cause The pluggable database status was UNUSABLE. It was still being created or there was an error during the create operation. A PDB can only be opened if it is successfully created and its status is marked as NEW in cdb_pdbs.status column SQL> select PDB_NAME,STATUS from cdb_pdbs; PDB_NAME             STATUS -------------------- --------------------------- PDB$SEED             NORMAL TEST_CLON            UNUSABLE Solution:  Drop the PDB and create it again. Related Posts How to Clone Oracle PDB (Pluggable Database) with in the Same Container

ORA-46630: keystore cannot be created at the specified location

<<Back to DB Administration Main Page ORA-46630: keystore cannot be created at the specified location CDB011> ADMINISTER KEY MANAGEMENT CREATE KEYSTORE '+DATAC4/CDB01/wallet/' IDENTIFIED BY "xxxxxxx"; ADMINISTER KEY MANAGEMENT CREATE KEYSTORE '+DATAC4/CDB01/wallet/' IDENTIFIED BY "EncTest123" * ERROR at line 1: ORA-46630: keystore cannot be created at the specified location Cause  Creating a keystore at a location where there is already a keystore exists Solution To solve the problem, use a different location to create a keystore (use ENCRYPTION_WALLET_LOCATION in sqlnet.ora file to specify the keystore location), or move this ewallet.p12 file to some other location. Note: Oracle does not recommend deleting keystore file (ewallet.p12) that belongs to a database. If you have multiple keystores, you can choose to merge them rather than deleting either of them.

Starting RMAN and connecting to Database

  <<Back to Oracle Backup & Recovery Main Page Starting RMAN and connecting to Database Starting RMAN and connecting to Database To start RMAN you need to set the environment and type rman and press enter. You can connect to database either using connect command or using command line option. using command line option localhost:$ export ORACLE_HOME=/ora_app/product/18c/dbd2 localhost:$ export PATH=$ORACLE_HOME/bin:$PATH localhost:$ export ORACLE_SID=ORCL1P localhost:$ rman target / Recovery Manager: Release 18.0.0.0.0 - Production on Sun Apr 4 08:11:01 2021 Version 18.11.0.0.0 Copyright (c) 1982, 2018, Oracle and/or its affiliates.  All rights reserved. connected to target database: ORCL1P (DBID=4215484517) RMAN> using connect option localhost:$ rman RMAN> connect target sys@ORCL1P  target database Password:******** connected to target database: ORCL1P (DBID=4215484517) NOTE: To use connect command you need to ensure that  you have proper TNS sentry for database (ORCL

How to Attach to a Datapump Job and Check Status of Export or Import

<<Back to Oracle DATAPUMP Main Page How to check the progress of  export or import Jobs You can attach to the export/import  job using ATTACH parameter of oracle datapump utility. Once you are attached to the job you check its status by typing STATUS command. Let us see how Step1>  Find the Export/Import Job Name You can find the datapump job information from  DBA_DATAPUMP_JOBS or  USER_DATAPUMP_JOBS view. SQL> SELECT OWNER_NAME,JOB_NAME,OPERATION,JOB_MODE,STATE from DBA_DATAPUMP_JOBS; OWNER_NAME JOB_NAME                       OPERATION            JOB_MODE   STATE ---------- ------------------------------ -------------------- ---------- ---------- SYSTEM     SYS_EXPORT_FULL_02             EXPORT               FULL       EXECUTING OR You can also find the job name for export/import in logfile in beginning itself. Step2>Attach to the Job and check status One you get the Export/Import Job Name attach the job and check its status. You can attach or det

ORA-15040: diskgroup is incomplete

<<Back to Oracle ASM Main Page ORA-15040: diskgroup is incomplete SQL> startup ORA-00099: warning: no parameter file specified for ASM instance ASM instance started Total System Global Area 1140850688 bytes Fixed Size                  8629704 bytes Variable Size            1107055160 bytes ASM Cache                  25165824 bytes ORA-15110: no diskgroups mounted Reason: The reason of this error is simply the ASM is not able to find the some or all the disks. Solution: Investigate and make all the disks available to ASM to mount the disk group. Make sure the disks has proper permissions. If you are using AFD check following services are online oracleacfs oracleadvm oracleoks  oracleafd   Source of Problem : Issue started after restart of the server After restarting the server when I tried to start the ASM instance its started throwing error.  ORA-15110: no diskgroups mounted Investigation in my Case Step1> ASM Logfile Scanning  Looked i