RMAN Script That Incorporates Various Backup and Recovery Operations

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This script includes the following operations:

Full Backup:

• Allocates a channel for the backup destination.
• Performs a compressed backup of the database using the BACKUP AS COMPRESSED BACKUPSET DATABASE PLUS ARCHIVELOG command.
• Releases the allocated channel.

Archive Log Backup:

• Allocates a channel for the backup destination.
• Performs a backup of all archived redo log files using the BACKUP ARCHIVELOG ALL command.
• Releases the allocated channel.

Restore and Recovery:

• Shuts down the database immediately.
• Starts up the database in the mounted state.
• Restores the database using the RESTORE DATABASE command.
• Recovers the database using the RECOVER DATABASE command.
• Opens the database using the ALTER DATABASE OPEN command.
• Performs a backup of the recovered database using the BACKUP DATABASE command.

Cross-Check Backups:

• Cross-checks the backups and archived logs to verify their existence.
• Deletes expired backups and archived logs.

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Backup Validation:

• Previews the restore process to validate the backups using the RESTORE DATABASE PREVIEW command.
• Cross-checks the backups and reports any backups that are needed.

Note: 

Please ensure to replace <SID> with the actual Oracle System Identifier (SID) and <Oracle_Home> with the path to your Oracle Home directory.

# RMAN Script for Full Backup, Archive Log Backup, and Restore & Recovery

# Set the environment variables
SET ORACLE_SID = <SID>
SET ORACLE_HOME = <Oracle_Home>

# Connect to RMAN
RMAN TARGET /

# Full Backup
RUN {
  ALLOCATE CHANNEL c1 DEVICE TYPE disk;
  BACKUP AS COMPRESSED BACKUPSET DATABASE PLUS ARCHIVELOG;
  RELEASE CHANNEL c1;
}

# Archive Log Backup
RUN {
  ALLOCATE CHANNEL c1 DEVICE TYPE disk;
  BACKUP ARCHIVELOG ALL;
  RELEASE CHANNEL c1;
}

# Restore and Recovery
RUN {
  SHUTDOWN IMMEDIATE;
  STARTUP MOUNT;
  RESTORE DATABASE;
  RECOVER DATABASE;
  ALTER DATABASE OPEN;
  BACKUP DATABASE;
}

# Cross-Check Backups
RUN {
  CROSSCHECK BACKUP;
  CROSSCHECK ARCHIVELOG ALL;
  DELETE NOPROMPT EXPIRED BACKUP;
  DELETE NOPROMPT EXPIRED ARCHIVELOG ALL;
}

# Backup Validation
RUN {
  RESTORE DATABASE PREVIEW;
  CROSSCHECK BACKUP;
  REPORT NEED BACKUP;
}

# Exit RMAN
EXIT;

This script provides a comprehensive backup and recovery workflow using RMAN, including full backups, archive log backups, restore and recovery operations, cross-checking backups, and backup validation. Feel free to customize it based on your specific requirements and environment.

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