Sql model database log file is full

For more information, see Recovery Models. You must back up the transaction log to allow log records to be released and the log truncated. If the log has never been backed up, you must create two log backups to permit the Database Engine to truncate the log to the point of the last backup. Truncating the log frees logical space for new log records. To keep the log from filling up again, take log backups regularly and more frequently. A complete history of all SQL Server backup and restore operations on a server instance is stored in the msdb system database.

To review the complete backup history of a database, use the following sample script:. SqlBackup SMO. A very long-running transaction can cause the transaction log to fill. To look for long-running transactions, use one of the following:. This dynamic management view returns information about transactions at the database level. Sometimes you just have to end the transaction; you may have to use the KILL statement. Please use this statement very carefully, especially when critical processes are running that you don't want to kill.

When transaction changes at primary Availability replica are not yet hardened on the secondary replica, the transaction log on the primary replica cannot be truncated. This can cause the log to grow , and can occur whether the secondary replica is set for synchronous or asynchronous commit mode. For information on how to troubleshoot this type of issue see Error No checkpoint has occurred since the last log truncation, or the head of the log has not yet moved beyond a virtual log file VLF.

All recovery models. This is a routine reason for delaying log truncation. For a more details see Factors that can delay log truncation.

In some situations the disk volume that hosts the transaction log file may fill up. You can take one of the following actions to resolve the log-full scenario that results from a full disk:.

You might be able to free disk space on the disk drive that contains the transaction log file for the database by deleting or moving other files.

The freed disk space allows the recovery system to enlarge the log file automatically. If you cannot free enough disk space on the drive that currently contains the log file, consider moving the file to another drive with sufficient space. See Move Database Files for information on how to change the location of a log file.

Make a maintenance plan to regularly backup the database and don't forget to select "Backup the transaction log". That way you'll keep it small.

Once this has completed shrink the log file to free up disk space. Finally switch database recovery mode to simple. As soon as you take a full backup of the database, and the database is not using the Simple recovery model, SQL Server keeps a complete record of all transactions ever performed on the database. It does this so that in the event of a catastrophic failure where you lose the data file, you can restore to the point of failure by backing up the log and, once you have restored an old data backup, restore the log to replay the lost transactions.

To prevent this building up, you must back up the transaction log. My dear friend it is vey important for a DBA to check his log file quite frequently.

Because if you don't give much attention towards it some day it is going to give this error. For this purpose you have to periodically take back up so that the logs file would not faced such error. Stack Overflow for Teams — Collaborate and share knowledge with a private group.

Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. The log file for database is full Ask Question. Asked 13 years, 4 months ago. Active 9 years, 7 months ago.

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He was taking the backup of the model database every day taking the database backup every night. When I explained the same to him, he did not believe it; so I quickly wrote down the following script.

The results before and after the usage of the script were very clear. The model database is used as the template for all databases created on an instance of SQL Server. Any object you create in the model database will be automatically created in subsequent user database created on the server. During the demo, the model database was in full recovery mode and only full backup operation was performed no log backup.

The model database was in full recovery mode and taking full backup is logged operation. As there was no log backup and only full backup was performed on the model database, the size of the log file kept growing. Let me know if you have encountered a situation like this?

If so, how did you resolve it? It will be interesting to know about your experience. Very interesting! You should also note that changing the recovery model of the Model database will change the default recovery model of any database that is created after. I am reminded of an interesting incident at a place I worked and we supported a third party application database on SQL Server service pack 4.

The model database log filled the local drive and SQL Server stopped.