Troubleshooting Guide: Error 4322 in Microsoft SQL Server 2025
Why This Error Happens
Error 4322 occurs when performing a point-in-time restore where the specified STOPAT time precedes the log records contained in the backup set being restored. This typically happens when transaction log backups are applied out of sequence, or when the recovery chain is broken because a differential or full backup was skipped. SQL Server refuses to roll forward because applying these log records would violate the logical consistency of the point-in-time requested, leaving the database in RESTORING state to prevent data corruption.
Step-by-Step Resolution Guide
Step 1: Verify the Backup Chain Sequence
- Query
msdb.dbo.backupsetto reviewbackup_start_date,backup_finish_date, anddatabase_backup_lsnfor all backups involved. - Run:
SELECT database_name, backup_start_date, first_lsn, last_lsn, backup_type FROM msdb.dbo.backupset WHERE database_name = 'YourDB' ORDER BY backup_start_date; - Confirm that the full backup, differential (if any), and log backups form an unbroken LSN chain leading up to your desired restore point.
Step 2: Restore in the Correct Order with Proper STOPAT Value
- Restore the full backup first using
WITH NORECOVERY. - Example:
RESTORE DATABASE YourDB FROM DISK = 'C:\Backups\YourDB_Full.bak' WITH NORECOVERY; - Apply differential backup (if present) before any log backups:
RESTORE DATABASE YourDB FROM DISK = 'C:\Backups\YourDB_Diff.bak' WITH NORECOVERY; - Restore log backups sequentially in chronological order, adjusting the
STOPATclause to a timestamp that falls within the range covered by the log backup you are currently applying, not before it:RESTORE LOG YourDB FROM DISK = 'C:\Backups\YourDB_Log1.trn' WITH NORECOVERY, STOPAT = '2025-01-15T14:30:00';
Step 3: Correct the STOPAT Timestamp if Misaligned
- Cross-check the
STOPATvalue against thefirst_lsnandlast_lsntimestamps retrieved in Step 1. - If the specified time is earlier than the backup set’s log range, adjust
STOPATto a valid time within the correct log file, or omitSTOPATentirely on earlier log restores and only apply it on the final log file. - Re-run the restore sequence from the full backup if the database was already left in an inconsistent
RESTORINGstate.
Step 4: Finalize Recovery
- Once all correct log backups are applied with the right
STOPATtime, issue the final recovery command:RESTORE DATABASE YourDB WITH RECOVERY; - Confirm no further restore operations are pending before executing this step, as it will bring the database online and end the restore sequence.
Alternative or Verification Steps
- Verify success by checking
sys.databasesfor the database state:SELECT name, state_desc FROM sys.databases WHERE name = 'YourDB';— it should readONLINE. - If the chain cannot be repaired due to a missing or corrupted log backup file, restore from the last known good full or differential backup and accept the nearest valid recovery point instead of the originally intended
STOPATtime.