Is it possible to shrink a transaction log file?

Is it possible to shrink a transaction log file?

I’m unable to shrink the log file of the databases. Transaction log backup of the databases are set to run every 30 mins from 6 AM-7PM. They are of size 10 and 2 Gb respectively. I tried to shrink it around 8-9 PM last night but I was not able to do.

Why is my log file not replicating properly?

No is it not replicating properly to one or more subscribers. Replication must happen in order it was executed. If command 2 fails to replicate, it will never continue until command 2 succeeds. 1 or more of your subscribers is not taking transactions. You will not be able to shrink the log file until you resolve the issue.

Why is my database transaction log file full?

The transaction log for database is full due to ‘REPLICATION’. Upon investigation, I found that my log file was capped at 100GB on ServerB.DBB which was causing the issue. To fix this, I added a new log file as I was unable to extend the existing log file due to same error. This fixed my issue and replication caught up in some time.

Why is my DBCC log file not shrinking?

DBCC LOGINFO shows all my VLFs in use. Based on the result of Log_reuse_wait_desc and DBCC OPENTRAN, undistributed transaction causes the Log Growth. According to your description ‘ This value is not changing since many hours now ‘, I think the replication did not work effectively.

Why is replication causing the log not shrinking problem?

This means Replication is causing the log not shrinking problem. DBCC OPENTRAN gives you the traction that is blocking as output which in your case is following :

Why is my transaction log full due to replication?

Today, I got an alert saying that my replication ServerA.DBA (pub) –> ServerB.DBB (Sub) is failing with below error: Replication-Replication Distribution Subsystem: agent failed. The transaction log for database is full due to ‘REPLICATION’.

How to shrink the transaction log in SSMS?

To shrink the log in SSMS, right click the database, choose Tasks, Shrink, Files: On the Shrink File window, change the File Type to Log.

Why is the transaction log in SQL Server so big?

For some reason the transaction log for this database is massive (410 GB) with 99% of the space unallocated. I’ve tried to shrink the file using ( DBCC SHRINKFILE (MyDatabase_log, 20000) )but it doesn’t seem to work. Anyone have any tips on why a SIMPLE recovery mode database would have such a huge file? I’d really like to get it shrunk way down.

Do you need a large log file for simple recovery?

However, the log file does indeed have to have a reasonable size to it, even in the SIMPLE recovery model, as that is where information is kept during transactions and long running SPIDs need more of a log file. Among many reasons, one of those is for roll-back in the event of a problem.

Why is the transaction log file not truncated?

Normally, the log file may not be truncated after a backup for another reason. We can learn why the log file is not truncated using the following query. If the log_reuse_wait_desc is LOG_BACKUP, this means that transaction log is not backed up. To shrink the log file, you should backup your transaction log one or more times.

How big is transaction log file in SQL Server?

Transaction log backup of the databases are set to run every 30 mins from 6 AM-7PM. They are of size 10 and 2 Gb respectively. I tried to shrink it around 8-9 PM last night but I was not able to do. The log_reuse_wait column stated it’s waiting on a log_backup.

How can I increase the size of my transaction log file?

You can gain space by enlarging the existing log file (if disk space permits) or by adding a log file to the database, typically on a different disk. One transaction log file is sufficient unless log space is running out, and disk space is also running out on the volume that holds the log file.

Why is there a problem with my transaction log?

In some cases, temporarily creating more disk space will allow a long-running transaction to complete, removing the condition blocking the transaction log file from truncating with a normal transaction log backup. However, freeing up space in the allocation may provide only temporary relief until the transaction log grows again.