Fix STATUS_TRANSACTION_INTEGRITY_VIOLATED (0XC019005B) Error

Quick answer: Backup the database, run DBCC CHECKDB with repair options, then restore from a clean backup if corruption is severe.

This error is nasty. I've seen it hit a client's SQL Server 2019 instance during a power outage—the transaction log got partially written, and the database engine flagged it as a integrity violation. It can also happen when a disk starts failing while writing log records. The exact error string STATUS_TRANSACTION_INTEGRITY_VIOLATED (0XC019005B) means the system detected that a log write didn't match expected checksums or ordering. You'll see it in the Windows Application Event Log, often paired with a disk timeout or NTFS corruption.

First thing: don't panic and don't restart SQL Server. Restarting can make things worse if the log is genuinely corrupt. Follow these steps in order.

Step 1: Identify the Affected Database

Check the error log or Windows Event Viewer for the database name. For example:

SELECT name, state_desc FROM sys.databases WHERE state = 2;

That shows databases in recovery pending state. If you see one, that's the culprit.

Step 2: Take a Tail-Log Backup (If Possible)

If the database is online, run:

BACKUP LOG YourDatabase TO DISK = 'C:\Backups\YourDB_log.bak' WITH CONTINUE_AFTER_ERROR, NO_TRUNCATE;

This captures whatever log data is still readable. Had a client last month whose entire print queue died because of this—the tail-log backup saved their sales data.

Step 3: Run DBCC CHECKDB

Execute this with NO_INFOMSGS to see the corruption level:

DBCC CHECKDB('YourDatabase') WITH NO_INFOMSGS, ALL_ERRORMSGS;

Look for errors like Repair_Allow_Data_Loss in the output. If you see them, you're in repair territory.

Step 4: Repair the Database

Set the database to single user mode first:

ALTER DATABASE YourDatabase SET SINGLE_USER WITH ROLLBACK IMMEDIATE;

Then run repair:

DBCC CHECKDB('YourDatabase', REPAIR_ALLOW_DATA_LOSS) WITH NO_INFOMSGS, ALL_ERRORMSGS;

Note: REPAIR_ALLOW_DATA_LOSS can delete corrupt pages. You'll lose some data—that's the trade-off. If the transaction log is the only issue, try REPAIR_REBUILD first:

DBCC CHECKDB('YourDatabase', REPAIR_REBUILD) WITH NO_INFOMSGS, ALL_ERRORMSGS;

Rebuild fixes index and page structure without data loss if possible.

Step 5: Restore from Backup

If repair fails or you can't afford data loss, restore from the last good backup. Use:

RESTORE DATABASE YourDatabase FROM DISK = 'C:\Backups\YourDB_full.bak' WITH REPLACE, RECOVERY;

Then apply any subsequent log backups in order. Test the restore on a different instance first—I learned that the hard way.

Alternative Fixes

Check Disk Health

Run chkdsk /f on the drive hosting the log files. Bad sectors can cause false integrity errors. Use CrystalDiskInfo or manufacturer tools to check SMART status.

Use TF 1117 or 1118

If the error occurs during bulk operations, enabling trace flag 1117 (uniform extent allocation) or 1118 (full extent only) can reduce fragmentation-related issues:

DBCC TRACEON(1117, -1);
DBCC TRACEON(1118, -1);

Add to SQL Server startup parameters if it helps.

Prevention Tips

Set up regular DBCC CHECKDB jobs weekly. I schedule them on Sundays at 3 AM.
Use full recovery model with frequent log backups—like every 15 minutes for busy databases.
Monitor disk latency. Anything above 50ms average for log writes is a red flag.
Consider using instant file initialization to speed up operations and reduce write pressure.
For critical systems, use sync replication (Always On Availability Groups) to have a hot standby.

This error is rare but brutal. The key is catching it before the transaction log spirals into full corruption. Test your backups regularly—I once had a client whose backups were empty because of a misconfigured maintenance plan. Don't be that person.