Why is Msdb so big?
MSDB stores backup and restore history. Imagine a server with 2000 databases that takes a log backup of all of them every 15 minutes. That’s 192,000 new rows into the backupset and backupmediaset tables EVERY DAY! Keeping a few weeks or months of history can cause the size of MSDB to get very large.
How do I clean my MSDB database?
Removing the SQL backup and restore history from the msdb database from SQL Server Management Studio
- Right click a database in the Object Explorer pane and select the Delete option:
- In the Delete Object dialog check the Delete backup and restore history information for databases option:
What is the default size of an SQL Server database?
When you create a database, the default size is 8MB. The autogrowth setting is 64MB at a time with unlimited growth (SQL Server 2016).
Can we shrink Msdb?
Can you shrink the database and transaction log for the MSDB database? The data and log files for the MSDB database can be resized. The code below would shrink the MSDB database data and log files to 256 and 64 megabytes respectively.
Should I shrink Msdb?
Shrinking a database isnt generally recommended but there may be situations when a compact operation is required. For example, introducing a purging policy of 90 days on backup history when previously there wasn’t one would cause a lot of free space in the msdb, especially if its a high activity instance based on jobs.
What is Sp_delete_backuphistory?
Reduces the size of the backup and restore history tables by deleting the entries for backup sets older than the specified date. The backup and restore history tables reside in the msdb database.
What is Syspolicy_purge_history?
The SYSPOLICY_PURGE_HISTORY is a built-in SQL Server Agent Job which is configured to run once a day at 2 AM. When SYSPOLICY_PURGE_HISTORY SQL Server Agent Job is executed it will remove records from the above tables, except for the retention period records.
What is SQL size?
The column (or parameter) size of numeric data types is defined as the maximum number of digits used by the data type of the column or parameter, or the precision of the data. The column size defined for each concise SQL data type is shown in the following table.
How big is a large database?
The most common definition of VLDB is a database that occupies more than 1 terabyte or contains several billion rows, although naturally this definition changes over time. I think something like wikipedia, or the US census data is a ‘big’ database.
How big is a SQL Server MSDB database?
On a few different SQL Server instances, we have observed MSDB databases over 1 GB. In each of the circumstances, the reason for the size of the MSDB database was different, so each circumstance opened up some new insight into how the MSDB database is used.
What kind of information is in MSDB database?
The MSDB database houses your maintenance plan information and job histories (amongst a few other things).
How big should a MSDB log file be?
MSDB acts a lot more like a low volume user database than the other system databases. File growth of 64MB is a good starting point. Try to right-size the log file so that it doesn’t need to grow. The right size for an instance will depend on many factors as seen in the next sections. What is the typical size of the MSDB database?
When to back up MSDB to SQL Server?
Notice that when SQL Server is installed or upgraded and whenever Setup.exe is used to rebuild the system databases, the recovery model of msdb is automatically set to simple. After any operation that updates msdb, such as backing up or restoring any database, we recommend that you back up msdb.