Obay Salah Profile
Obay Salah
obay@gmail.com
Oracle OCP
Oracle Data Guard Manual Failover
Published by :
Obay Salah , January 5, 2025
1- Minimize data loss (primarydb): If you can mount the primary database, then flush the logs to standbyOn primary: =========== SQL> startup mount... Continue Reading
Obay Salah Profile
Obay Salah
obay@gmail.com
Oracle OCP
Oracle Data Guard Manual Switchover
Published by :
Obay Salah , January 5, 2025
1- check Primary and standby database role and status.select name, open_mode, db_unique_name, database_role from v$database; 2- Check primary and stan... Continue Reading
Obay Salah Profile
Obay Salah
obay@gmail.com
Oracle OCP
Refresh Standby Database using RMAN Incremental SCN Backup
Published by :
Obay Salah , December 25, 2024
1. Verify GAP2. Stop Redo Transfer (On Primary)3. Find current SCN from Standby4. Take RMAN Incremental from SCN (Primary)5. Create Standby Control fi... Continue Reading
Obay Salah Profile
Obay Salah
obay@gmail.com
Oracle OCP
Creating Physical Standby Using RMAN DUPLICATE FROM ACTIVE DATABASE
Published by :
Obay Salah , December 25, 2024
Without shutting down primary, we need to create physical standby database using RMAN DUPLICATE FROM ACTIVE DATABASE command (No need to take backup o... Continue Reading
Obay Salah Profile
Obay Salah
obay@gmail.com
Oracle OCP
Convert Physical Standby To Snapshot Standby
Published by :
Obay Salah , December 24, 2024
1- Check both primary and standby roleSQL> select name, open_mode, database_role from v$database; SQL> select status, instance_name, databa... Continue Reading
Obay Salah Profile
Obay Salah
obay@gmail.com
Oracle OCP
Create Physical Standby Database using RMAN Backup
Published by :
Obay Salah , December 24, 2024
1. EnvironmentOn Primary (Step 2 to Step 12)2. Enable Forced Logging on Primary3. Check Password File on Primary4. Configure a Standby Redo Log on Pri... Continue Reading
Obay Salah Profile
Obay Salah
obay@gmail.com
Oracle OCP
check Oracle DB FRA and DISKGROUP Usage
Published by :
Obay Salah , December 22, 2024
1- Check fast recovery area usageselect name,round(space_limit / 1024 / 1024 /1024) size_gb ,round(space_used / 1024 / 1024/1024) used_gb, decode... Continue Reading
Obay Salah Profile
Obay Salah
obay@gmail.com
Oracle OCP
Enabling ARCHIVELOG mode
Published by :
Obay Salah , December 22, 2024
1- Log in as user oracle and enter the following commands:$ export ORACLE_SID=<MYDB> where <MYDB> is the name of the... Continue Reading
Obay Salah Profile
Obay Salah
obay@gmail.com
Oracle OCP
Oracle 19c Installation on Linux
Published by :
Obay Salah , December 15, 2024
1. Hardware Requirements— Check Physical RAM.# grep MemTotal /proc/meminfo We need at least 8192 MB of physical RAM— Check Swap Space.# grep SwapTotal... Continue Reading
Obay Salah Profile
Obay Salah
obay@gmail.com
Oracle OCP
Blocked Sessions in Oracle
Published by :
Obay Salah , December 10, 2024
1- Get current session id.SELECT SID, SERIAL# FROM V$SESSION WHERE SID = Sys_Context('USERENV', 'SID'); 2- Create Below Table and Insert a Row Without... Continue Reading