How do I check Data Guard apply lag?

Query V$DATAGUARD_STATS and review the Apply Lag value.

How do I check Data Guard transport lag?

Query V$DATAGUARD_STATS and review the Transport Lag value.

How do I detect archive gaps?

Use SELECT * FROM V$ARCHIVE_GAP.

What is RMAN Backup Validation?

RMAN Backup Validation verifies Oracle backup integrity and recoverability without performing a restore.

What does RESTORE DATABASE VALIDATE do?

It verifies that RMAN backups can be restored successfully without actually restoring files.

How do I detect Oracle block corruption?

Use V$DATABASE_BLOCK_CORRUPTION and RMAN VALIDATE DATABASE CHECK LOGICAL.

What are the most important Oracle DBA interview topics?

Oracle Architecture, RMAN, Backup and Recovery, Data Guard, RAC, Performance Tuning, Security, and Troubleshooting are the most important Oracle DBA interview topics.

Is Oracle DBA still a good career in 2026?

Yes. Oracle DBA remains a strong career path due to the widespread use of Oracle databases in enterprise environments.

What Oracle version should I learn in 2026?

Oracle 19c and Oracle 23ai are the most valuable Oracle database versions to learn in 2026.

FNDCPASS change SYSADMIN APPS passwords

Applies to:

Oracle Enterprise Linux – Version: 5

Oracle EBS R12

Description:

How to change SYSADMIN and APPS passwords

Solution:

You can change SYSADMIN and APPS passwords as follow:

Change the SYSADMIN password:

[appltest@ebstest] FNDCPASS apps/apps 0 Y system/managerr USER SYSADMIN <new-password>
Log filename : L1234567.log
Report filename : O1234567.out

Change the APPS password:
changing the APPLSYS password change the APPS password:

[appltest@ebstest] FNDCPASS apps/apps 0 Y system/manager SYSTEM APPLSYS <new-password>
Log filename : L1234567.log
Report filename : O1234567.out

Run the autoconfig on all the nodes, autoconfig is configuring the Applications environment.

👉 Check our complete guide: Oracle Error Codes Guide

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About the Author

Rana Abdul Wahid is an experienced Oracle Database Administrator with expertise in Oracle Database Administration, Oracle Data Guard, RMAN Backup & Recovery, Oracle RAC, Oracle E-Business Suite, Performance Tuning, and High Availability Solutions.

Through this blog, he shares practical Oracle DBA solutions, troubleshooting guides, interview preparation resources, and production-tested best practices for database professionals worldwide.