tdbrestore

tdbrestore backup_tdb_file original_tdb_file

backup_tdb_file
    The path to the TDB backup file to be used for restoration.

original_tdb_file
    The path to the TDB file that will be overwritten with the backup data.

The tdbrestore command is a utility used to restore a Samba TDB (Trivial Database) file from a backup. TDB is a lightweight database library used by Samba to store various configuration and state information. This command allows administrators to recover a TDB file from a previous snapshot, which is crucial for disaster recovery and data integrity.

The restoration process overwrites the existing TDB file with the data from the backup file. Therefore, it is imperative to ensure that the backup is valid and consistent. Incorrect restoration can lead to data corruption or service disruption. Before using tdbrestore, it's recommended to stop any services that are actively using the TDB file to prevent conflicts during the restore operation. Always create a backup copy of the existing (potentially corrupt) TDB file before performing the restoration.

This tool is primarily used by Samba administrators for maintenance and recovery tasks. Restoring a database that is in use can lead to corruption.

Using tdbrestore without stopping related services can lead to database corruption. Always back up the original TDB file before restoring.

To restore a TDB file named 'secrets.tdb' from a backup file named 'secrets.tdb.bak', you would use the following command:
tdbrestore secrets.tdb.bak secrets.tdb

tdbdump(1), tdbbackup(1)