Oracle RMAN Unregister Database from Recovery Catalog Purpose Unregistering a database from an Oracle RMAN (Recovery Manager) recovery catalog removes all backup metadata and database information from the catalog repository. This process is essential when a database is decommissioned, no longer needs catalog-based …

How to Create Oracle RMAN Recovery Catalog Step by Step Purpose The Oracle Recovery Manager (RMAN) recovery catalog is a dedicated database schema that stores metadata about backup and recovery operations for one or more target databases. This script demonstrates how to create a recovery catalog by establishing a …

Oracle Database Log Destinations Monitoring Script for Data Guard Purpose This Oracle SQL script monitors all log destinations in a Data Guard configuration from the primary database. The query provides real-time information about archive log destinations, their status, operational modes, and standby redo log activity. …

How to Check Physical Standby Database Synchronization Physical standby databases in Oracle Data Guard need regular monitoring to ensure they stay synchronized with the primary database. The most effective way to check synchronization status is by comparing the current sequence number on the primary database with the …

How to Check Oracle Database Role Using V$DATABASE View Purpose The SQL query SELECT database_role FROM v$database is a fundamental Oracle Database command used to determine the current operational role of a database instance. This query is essential for Database Administrators (DBAs) working with Oracle Data Guard …

Check Missing Archive Logs in Oracle Data Guard Standby Database Purpose This SQL query helps database administrators identify missing archive logs on an Oracle Data Guard standby database. When archive logs fail to transfer from the primary to the standby database, it creates gaps that prevent proper synchronization. …

How to Cancel Oracle Data Guard Managed Recovery Overview The ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL command stops the Managed Recovery Process (MRP) on an Oracle Data Guard physical standby database. This command is essential when you need to perform maintenance operations, open the database in …

Removing Standby Database Apply Delay in Oracle Data Guard Purpose This script removes the apply delay from an Oracle Data Guard physical standby database. Apply delays are safety features that create a time lag between when redo data arrives at the standby database and when it is applied, protecting against corrupted …

Oracle Data Guard Standby Database Startup Commands Oracle Data Guard standby database startup commands enable database administrators to initialize and maintain physical standby databases that provide disaster recovery and high availability for production systems. These three essential commands work together to bring …

How to Remove an Oracle AWR Baseline Using DROP_BASELINE Purpose The DROP_BASELINE procedure removes a previously-defined AWR (Automatic Workload Repository) baseline from an Oracle database. This command is essential for database administrators who need to conserve storage space by deleting unused or outdated …