How do I resize a redo log in standby database?

How do I resize a redo log in standby database?

Following are the steps to drop and create new standby database:

1. Check Primary Redo Thread Number and size.
2. Check Standby Thread number and Size for Standby redo logs.
3. Stop the data-guard recovery process in Standby database:
4. Drop the existing Standby redo files:
5. Create new Standby logfile with THREAD Clauses.

How do you drop the current redo log group in standby database?

On Standby Server:

1. Cancel the Redo log apply service running.
2. Change the STANDBY_FILE_MANAGEMENT to MANUAL from AUTO in Standby Server.
3. Add or Drop the Redo log file in Standby:
4. Change the STANDBY_FILE_MANAGEMENT parameter value to AUTO.
5. Start the applied log service on standby.

How do you drop and recreate online redo logs in standby database?

select ‘alter database drop logfile group ‘ group# ‘;’ from v$log; 8. Check the status of online redolog group. (Easy way is, leave them for a while and move ahead with droping Primary Database redo logs, and come back to Standby and you will be able to do it).

How do you change the frequency of a redo log switch?

Ideally redo log switch frequency should be 4-5 log switches per hour. If there is frequent log switches then check the size of redo logs and increase accordingly. V$LOG_HISTORY is used to check history of redo log generation in Oracle. V$LOGFILE is used to check the file name and location of redo logs.

How do I get rid of standby logfile?

How to drop the standby redo logs

1. Enviroment.
2. SET STANDBY_FILE_MANAGEMENT=’MANUAL’
3. Drop SRL On Standby.
4. SET STANDBY_FILE_MANAGEMENT=’AUTO’
5. Enable MRP.
6. Enviroment.
7. SET STANDBY_FILE_MANAGEMENT=’MANUAL’
8. Drop SRL On Standby.

How do I create a standby redo log?

To create new standby redo log file groups and members, you must have the ALTER DATABASE system privilege. The standby database begins using the newly created standby redo data the next time there is a log switch on the primary database.

How do I drop the current logfile in standby database?

Drop Redo Logs on Standby

1. Check the Status of the Online Redolog Group.
2. Stop Redo Apply:
3. Set STANDBY_FILE_MANAGEMENT to MANUAL.
4. Clear the Online Redo Logfile Group:
5. Drop the Online Redo Logfile Group:
6. Set STANDBY_FILE_MANAGEMENT to AUTO.
7. Start Redo Apply:

How many standby redo logs needed?

The standby redo log must have at least one more redo log group than the redo log at the redo source database. Standby redolog is mandatory for realtime apply. In 12c DEFAULT MRP will go to REAL TIME APPLY mode. Oracle recommends to keep standby redologs on both primary and standby database.

How do I create a standby logfile?

How do I change my primary database to standby?

Activate physical standby database

1. Step 1 (Optional) Identify and resolve any gaps in the archived redo log files.
2. Step 2 Initiate the failover operation on the target physical standby database.
3. Step 3 Convert the physical standby database to the primary role.
4. Step 4 Shut down and restart the new primary database.

How to resize redo log and standby redo?

SQL> alter database drop logfile group 3 #rm /u01/oradata/css/redolog_3a.dbf /u02/oradata/css/redolog_3b.dbf Repeat this for the Redo Log group with status on “CLEARING”. After which do the following; Do a switch log on the primary database. Do the same for the “UNASSIGNED” SRL group. SQL> alter database clear logfile group 4; Database altered.

How to recreate an online redo logfile?

Follow step 5,6,7 to know current status and prepare commands. 16. Drop Standby redo logs and recreate them 17. Drop online Redo logs, recrate, switch and drop next inactive one. 18. Check the new status. Now come back to Standby Database back and drop recreate left over online and standby redo logs.

How to add standby log groups to primary database?

SQL> select vs.group#,vs.bytes,v l.member from v$standby_log vs, v$ log file v l where vs.group# = v l.group# order by vs.group#,v l.member; End all activities on the primary and standby database. Change tns names.ora entry on all servers to swap the connect strings (my server_prod and my server_prod2).

How to resize redo log in Oracle DataGuard?

Oracle DataGuard – How to resize Redo Log and Standby Redo Log – The little things about databases…. How to resize Redo Log and Standby Redo Log in Oracle DataGuard environment? I needed to resize the redo log as it takes about 4 days to do a log switch. The recommended log switch frequency is at least once an hour.