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Why is my log file so big after a backup?
The log ‘truncation’ you’re referring to means that, after a log backup, log space is available for ‘reuse’. Again, this process does not automatically reduce the size of the log. To reduce the log size,, you’d need to ‘ shrink ‘ the log file.
When does backing up a database shrink the transaction log size?
If that drawer is no longer actively in use (because SQL Server has moved on to the next drawer), then you’re marking that drawer as available to reuse (think of it as throwing all the contents out) Backups don’t change the size of your cabinet (log file).
How can I reduce the size of my log file?
To reduce the log size,, you’d need to ‘ shrink ‘ the log file. Repeated shrinking of the log is discouraged because it typically just re-grows, which affects performance. If you do ‘shrink’ the log, you should monitor the growth rate.
When does log truncation occur after a database backup?
Except when delayed for some reason, log truncation occurs automatically as follows: – Under the simple recovery model, after a checkpoint. Under the full recovery model or bulk-logged recovery model, after a log backup, if a checkpoint has occurred since the previous backup.
What happens if your SQL server log file is too big?
SQL Server log file is too big – resolved! If your SQL Server transaction log (LDF) file is too big – you are doing something wrong. As technet puts it: Typically, truncation occurs automatically under the simple recovery model when database is backed up and under the full recovery model when the transaction log is backed up.
Is the transaction log file still the same size?
However the log file in the \\DATA directory is still the same size. I was under the impression that the transaction log file would automatically be truncated on a log backup, as mentioned here and elsewhere.
Why does the transaction log shrink after a backup?
The transaction log does not automatically shrink because you did a backup. This is actually a good thing because processes actually stop when the log grows. Your log has grown to the current size because you had processes that required the log to grow to that size.
How big is the SQL Server transaction log file?
I previously made a full backup, and then on a daily basis add differential backups. Now I have backed up the transaction log for the first time, which reflected in the greatly increased file size of the .bak file. However the log file in the \\DATA directory is still the same size.
Why is MY SQL server log so big?
This is actually a good thing because processes actually stop when the log grows. Your log has grown to the current size because you had processes that required the log to grow to that size. These could have been long running units of work that generated a lot of log records (like index maintenance).