![]() ![]() While it runs, DBCC CHECKDB creates a database snapshot (if needed) and suspends the FILESTREAM garbage collection process. If a database snapshot was created by DBCC CHECKDB, it’s discarded automatically after the consistency-checking algorithms are complete. DBCC CHECKDB recognizes that it’s already running on a database snapshot and doesn’t attempt to create another one. In this case, the solution is to create your own database snapshot, placing the snapshot files on a volume with more disk space, and then to run DBCC CHECKDB on that. The results, if any, should be discarded. Restore the database from a full backup, or repair the database.Ī severe error occurred on the current command. Typically, the specific failure is previously logged as an error in the Windows Event Log service. Write to sparse file 'C:\SQLskills\SalesDBData.mdf:MSSQL_DBCC20' failed due to lack of disk space.ĭuring redoing of a logged operation in database 'SalesDB2', an error occurred at log record ID (1628:252:1). Attempting to get exclusive access to run checks offline. Either the reason is given in a previous error or one of the underlying volumes does not support sparse files or alternate streams. The database snapshot for online checks could not be created. An example of this is shown here (the errors can vary depending on the exact point at which the database snapshot runs out of space):ĭBCC CHECKDB ('SalesDB2') WITH NO_INFOMSGS, ALL_ERRORMSGS Ī database snapshot cannot be created because it failed to start. In a situation where the volumes hosting the database don’t have much space, this can mean the hidden database snapshot runs out of space and DBCC CHECKDB stops with an error. If the database being checked has a heavy update workload, more and more pages are pushed into the database snapshot, causing it to grow. Because it’s implemented using alternate streams of the existing data files, the database snapshot consumes space from the same location as the existing data files. Disk space issues during DBCC CHECKDB Sometimes an issue arises when the hidden database snapshot runs out of space. ![]()
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