Oracle

How to Enable Oracle Database Flashback: Shutdown, Mount, and ALTER Commands Oracle Flashback Database is one of the most powerful data protection tools available to a DBA. This guide walks you through the four commands needed to turn on Oracle Flashback — from a clean shutdown to opening the database in flashback …

Oracle Resumable Import Parameters: Monitor and Manage DBA_RESUMABLE When you run a large Oracle Data Pump import (impdp), the job can fail mid-way if a tablespace runs out of space. Oracle's resumable import feature prevents this by suspending the job instead of failing it, giving you time to fix the problem and then …

Oracle Full Database Export Using a Named Pipe and Gzip Compression in KSH Exporting a full Oracle database can produce very large dump files. This script solves that problem by streaming the export directly through a Linux named pipe into gzip, compressing the output on the fly — without ever writing an uncompressed …

Oracle exp/imp Parameter File: Direct Path User-to-User Data Migration Using a parameter file (parfile) with Oracle's legacy exp and imp utilities is a clean, repeatable way to move schema data between users — especially when you need speed, control over what gets transferred, and a consistent log trail. This post …

Oracle Database Export and Import to Gzip Through a Named Pipe When you need to export a large Oracle database but do not have enough disk space for a full uncompressed dump file, piping the export directly through gzip using a Unix named pipe is a proven technique. This method compresses data on the fly, producing a …

Oracle RMAN Delete Obsolete Backups with Maintenance Channel Purpose The Oracle RMAN (Recovery Manager) commands shown in this script help database administrators manage backup storage by automatically removing old, unnecessary backup files. These commands allocate a maintenance channel for disk operations and delete …

Oracle RMAN Restore Database Validate - Check Backup Integrity The RESTORE DATABASE VALIDATE command is one of the most critical proactive health check operations in Oracle Recovery Manager (RMAN) that allows database administrators to verify backup integrity without performing an actual restore operation. This command …

Oracle RMAN Delete Obsolete - Remove Unneeded Backups The DELETE OBSOLETE command in Oracle RMAN (Recovery Manager) is a powerful maintenance tool that automatically removes backup files that are no longer needed for database recovery. This command helps database administrators manage storage space by deleting backups …

Oracle RMAN Report Obsolete Command The REPORT OBSOLETE command in Oracle Recovery Manager (RMAN) helps database administrators identify backup files that are no longer required for recovery operations. This command compares existing backups against your configured retention policy and marks outdated backups as …

List Backup of Archivelog All: Oracle RMAN Command Guide Purpose The LIST BACKUP OF ARCHIVELOG ALL command in Oracle Recovery Manager (RMAN) displays all existing backups of archived redo log files stored in the RMAN repository. This command helps database administrators track and manage archived log backups, verify …