Database Administration

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 …

Display Log Destinations Options for Oracle Data Guard Primary Database Purpose This SQL script displays detailed information about all configured archive log destinations on an Oracle Data Guard primary database. The query retrieves critical configuration parameters from the V$ARCHIVE_DEST view, allowing database …

Oracle Logical Standby Apply Stop and Start Commands Purpose The logical standby apply commands control the SQL Apply process in Oracle Data Guard logical standby databases. These commands allow database administrators to stop and start the application of redo log data from the primary database to the logical standby …

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 …

List All Standby Redo Logs in Oracle Data Guard Purpose This SQL script helps database administrators quickly identify and list all standby redo logs in an Oracle Data Guard environment. The query retrieves important information about standby redo log groups, including their sequence numbers, sizes in megabytes, and …

How to Stop Oracle Data Guard Broker Using ALTER SYSTEM Command Purpose The command ALTER SYSTEM SET dg_broker_start=false stops the Oracle Data Guard broker by shutting down the Data Guard monitor (DMON) background process. This command is essential when you need to disable broker management temporarily for …

Oracle Enable FAL Tracing on Primary Database Purpose Enabling FAL (Fetch Archive Log) tracing on the primary database helps database administrators monitor and troubleshoot archive log gap resolution between primary and standby databases in Oracle Data Guard environments. This command activates detailed trace logging …

How to Disable and Enable Oracle Archive Log Destinations Purpose The Oracle commands for disabling and enabling archive log destinations allow database administrators to control the availability of archive destinations without removing the configuration. These commands are commonly used in 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 …