Useful DBCC Commands

The Transact-SQL programming language provides DBCC statements that act as Database Console Commands for SQL Server.

Database Console Command statements are grouped into the following categories.

1. Maintenance

2. Miscellaneous

3. Informational

4. Validation

DBCC commands take input parameters and return values. All DBCC command parameters can accept both Unicode and DBCS literals.

Some of the Maintenance DBCC Statements are:

DBCC CLEANTABLE

DBCC INDEXDEFRAG

DBCC DBREINDEX

DBCC SHRINKDATABASE

DBCC DROPCLEANBUFFERS

DBCC FREEPROCCACHE

DBCC SHRINKFILE

DBCC UPDATEUSAGE

Some of the Miscellaneous DBCC Statements are:

DBCC dllname (FREE)

DBCC HELP

DBCC FREESESSIONCACHE 

DBCC TRACEOFF

DBCC FREESYSTEMCACHE

DBCC TRACEON

Some of the Informational DBCC Statements are:

DBCC INPUTBUFFER

DBCC SHOWCONTIG

DBCC OPENTRAN

DBCC SQLPERF

DBCC OUTPUTBUFFER

DBCC TRACESTATUS

DBCC PROCCACHE

DBCC USEROPTIONS

DBCC SHOW_STATISTICS

Some of the Validation DBCC Statements are:

DBCC CHECKALLOC

DBCC CHECKFILEGROUP

DBCC CHECKCATALOG

DBCC CHECKIDENT

DBCC CHECKCONSTRAINTS  

DBCC CHECKTABLE

DBCC CHECKDB