This monitor checks the Auto Shrink setting for this database.Since this monitor is a part of an overall standards requirement, an alert would be generated if the setting does not meet the specified standard.
構成
When the Auto Shrink statistics setting is ON, the database files are candidates for periodic shrinking.データ ファイルとログ ファイルの両方を、自動的に圧縮できます。Auto Shrink reduces the size of the transaction log only if the database is set to SIMPLE recovery model or if the log is backed up.OFF に設定すると、未使用領域の定期チェックの際に、データベース ファイルは自動的に圧縮されません。AUTO_SHRINK オプションを使用すると、ファイル領域の 25% を超える領域が未使用の場合にファイルが圧縮されます。The file is shrunk to a size where 25 percent of the file is unused space or to the size of the file when it was created, whichever is larger.読み取り専用データベースは圧縮できません。
Auto shrink can lead to excessive index fragmentation, transaction log size, and I/O.Use auto shrink only if the database is unlikely to grow again and you can do an ALTER INDEX … REORGANIZE after the shrink operation.
AUTO_SHRINK {ON | OFF}
原因
A warning alert will be raised if the option does not match the required setting.Out of the box, the monitor is configured to alert when this setting is set to “ON”.
解決方法
This issue may be resolved by:
Changing the configuration setting for this database to match the expected value.
Overriding the expected value for this unit monitor for this specific database or all databases.
Alternatively, if this monitor is not of concern for this database:
Disabling the monitor using overrides for this specific database or all databases.
Disabling the top-level aggregate configuration monitor using overrides for this specific database or all databases.
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