Examples of using Dbcc in English and their translations into Slovak
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DBCC execution completed.
To check for database corruption, consider running DBCC CHECKDB.
DBCC results for‘DBNAME'.
You will have to specify the DATA_PURITY option for the DBCC command until the database is reported to be clean.
DBCC SHRINKFILE receives the target size parameter.
Is entered if a one word instruction is followed by a DBcc looping to the previous instruction, no more instruction fetches occur until loop end.
DBCC CHECKDB- Validate the overall database integrity.
One technique to help narrow down what the repair levelwill be for each table is to use DBCC CHECKTABLE for any table reporting an error.
Use DBCC CHECKDB to verify the integrity of the database.
To see this number,look for the OS Reserved value that is reported in DBCC MEMORYSTATUS and that is reported as number of 8-KB pages.
If DBCC printed error messages, contact your system administrator.
It is advisable to restore the production database on a test server,then get all the required information using DBCC PAGE, and then do the updates on the production server.
If DBCC printed error messages, contact your system administrator.
For any SPID at the head of a blocking chain or with a non-zero waittype,the blocking script will execute DBCC INPUTBUFFER to determine the current query for that SPID.
A limitation of DBCC SHRINKFILE is that you cannot make the database smaller than the size of the model database.
However, it is also possible that no problem will appear, and the invalid data will not be discovered until you execute a DBCC CHECKDB or DBCC CHECKTABLE command on SQL Server 2005 and later versions.
An advantage of DBCC SHRINKFILE is that it can reduce the size of a file to a size that is smaller than its original size.
For databases created in SQL Server 2005 and later versions, these checks are enabled by default and cannot be disabled, so the use of the DATA_PURITY option when executing a DBCC CHECKDB or DBCC CHECKTABLE command is irrelevant.
This is because for an online DBCC CHECKDB, an internal database snapshot is used to present a consistent set of data to check.
Note Because the blocking script consists of multiple steps, it is possible that a SPID may appear in the first section as the head of a blocking chain,but by the time the DBCC INPUTBUFFER query is executed, it is no longer blocking and the INPUTBUFFER is not captured.
When you run DBCC CHECKDB a recommendation is provided to indicate what the minimum repair option that is required to repair all errors.
If the error persists after rerunning the statement, use DBCC CHECKDB to check the database for structural integrity, or restart the server to ensure in-memory data structures are not corrupted.
DBCC SHRINKFILE provides more flexibility than DBCC SHRINKDATABASE because you can use it on a single database file without affecting other files that belong to the same database.
If tempdb is being used, and if you try to shrink it by using the DBCC SHRINKDATABASE or DBCC SHRINKFILE command, you may receive messages that resemble the following, depending on the version of SQL Server that you are using.
When you execute a DBCC CHECKDB or DBCC CHECKTABLE command with this option enabled, the command will perform"data purity" validations on every column value in all rows of the table or tables in the database.
FIX: The output from the DBCC MEMORYSTATUS command indicates that the Schema Manager cache uses more buffer space than expected in SQL Server 2008.
All subsequent DBCC CHECKDB or DBCC CHECKTABLE command executions will notice this information and will automatically perform the data purity checks, as would happen for databases created on SQL Server 2005.
When you execute a DBCC CHECKDB or DBCC CHECKTABLE command with the DATA_PURITY option enabled(or the data purity checks are run automatically), and invalid data exists in the tables checked by the DBCC commands, the DBCC output includes additional messages that indicate the problems with the data.
To find out when the last time DBCC CHECKDB was run without errors detected for a database(the last known clean CHECKDB), check the SQL Server ERRORLOG for a message like the following for your database or system database(this message is written as an Information Level message in the Windows Application Event Log with EventID= 17573).