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When to truncated transaction log in simple recovery model?
Under the Simple recovery model transactions are still logged in case the current transaction fails and a rollback is required, however the log is truncated whenever a checkpoint occurs (and if there are no uncommitted transactions at the time of the checkpoint).
Is there log file in simple recovery mode?
First of all your understanding that nothing is written to log file when the database is in simple recovery mode is WRONG.
How does SQL Server work in recovery mode?
SQL Server writes to the Log file in all recovery modes, the only difference is In simple recovery mode it automatically reclaims the log space (when it can) and also logs minimum stuff to maintain transaction (just incase if you have to rollback one).
How to change recovery model to ” simple “?
Why not set the recovery model to ‘Full’, take a log backup (or truncate the log) and shrink the file, then change the recovery model back to ‘Simple’? How many rows are you attempting to delete with your DELETE statement?
Can a SQL Server full backup truncate the transaction log?
Short answer is no, sql server full backup does not truncate log. If CDC (Change Data Capture) or replication is enabled in your database, SQL Server will not truncate the transaction log file or you will not be able to shrink the transaction log file after backing up the Transaction Log, and this start filling your disks.
Do you need to backup your transaction log?
To shrink the log file, you should backup your transaction log one or more times. If you are using the full recovery model, you should create a job to backup transaction logs on a regular basis. You may want to read the article titled “ Database Recovery Models “.
Is it possible to shrink a transaction log file?
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. If you are using the full recovery model, you should create a job to backup transaction logs on a regular basis.