To manually recover a transaction log in SQL Server, start by checking the database’s current state using SELECT to ensure there are no issues. If the transaction log is full or there are active transactions, back it up with BACKUP LOG. If corruption or data loss is suspected, restore the last known full backup using RESTORE DATABASE with NORECOVERY, then apply any available transaction log backups with RESTORE LOG. Once all log backups are applied, run RESTORE DATABASE with RECOVERY to bring the database online. After recovery, perform DBCC CHECKDB to ensure database integrity and then back up the database again. Going forward, set up regular log backups to manage transaction logs effectively.
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