Oracle

Oracle RMAN Database Restore and Recovery Guide Purpose This guide provides complete Oracle RMAN (Recovery Manager) scripts for restoring and recovering Oracle databases in different scenarios. These scripts help database administrators perform full database recovery, point-in-time recovery (PITR), and verify …

Oracle RMAN Database Backup Commands Guide Oracle Recovery Manager (RMAN) is the primary tool for backing up and recovering Oracle databases, offering automated backup operations with built-in compression, encryption, and validation capabilities. This guide covers essential RMAN backup commands for hot backups, cold …

Oracle RMAN Resync Catalog Command Guide Purpose The RESYNC CATALOG command synchronizes the metadata stored in your Oracle RMAN recovery catalog with the current information in the target database control file. This ensures that all backup, restore, and recovery operations use the most accurate and up-to-date database …

Oracle RMAN Crosscheck Backup Command - Verify Backup Availability Purpose The CROSSCHECK BACKUP command is an essential Oracle RMAN (Recovery Manager) tool that verifies whether backup files recorded in the RMAN repository still physically exist on storage media. This command synchronizes the logical records in your …

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. …