DBCC - Undocumented commands

These commands may affect system performance and/or force table-level locks.
There is no guarantee these commands will remain available in any future release of SQL server.

DBCC activecursors [(spid)]

DBCC addextendedproc (function_name, dll_name)

DBCC addinstance (objectname, instancename)

DBCC adduserobject (name)

DBCC auditevent (eventclass, eventsubclass, success, loginname, rolename, dbusername, loginid)

DBCC autopilot (typeid, dbid, tabid, indid, pages [,flag])

DBCC balancefactor (variance_percent)

DBCC bufcount [(number_of_buffers)]

DBCC buffer ( {'dbname' | dbid} [, objid [, number [, printopt={0|1|2} ] [, dirty | io | kept | rlock | ioerr | hashed ]]])

DBCC bytes ( startaddress, length )

DBCC cachestats

DBCC callfulltext

DBCC checkdbts (dbid, newTimestamp)]

DBCC checkprimaryfile ( {'FileName'} [, opt={0|1|2|3} ])

DBCC cacheprofile [( {actionid} [, bucketid])

DBCC clearspacecaches ('database_name'|database_id, 'table_name'|table_id, 'index_name'|index_id)

DBCC collectstats (on | off)

DBCC config

DBCC cursorstats ([spid [,'clear']])

DBCC dbinfo [('dbname')]

DBCC dbrecover (dbname [, IgnoreErrors])

DBCC dbreindexall (db_name/db_id, type_bitmap)

DBCC dbrepair ('dbname', DROPDB [, NOINIT])

DBCC dbtable [({'dbname' | dbid})]

DBCC debugbreak

DBCC deleteinstance (objectname, instancename)

DBCC des [( {'dbname' | dbid} [, {'objname' | objid} ])]

DBCC detachdb [( 'dbname' )]

DBCC dropextendedproc (function_name)

DBCC dropuserobject ('object_name')

DBCC dumptrigger ({'BREAK', {0 | 1}} | 'DISPLAY' | {'SET', exception_number} | {'CLEAR', exception_number})

DBCC errorlog

DBCC extentinfo [({'database_name'| dbid | 0} [,{'table_name' | table_id} [, {'index_name' | index_id | -1}]])]

DBCC fileheader [( {'dbname' | dbid} [, fileid])

DBCC fixallocation [({'ADD' | 'REMOVE'}, {'PAGE' | 'SINGLEPAGE' | 'EXTENT' | 'MIXEDEXTENT'} , filenum, pagenum [, objectid, indid])

DBCC flush ('data' | 'log', dbid)

DBCC flushprocindb (database)

DBCC freeze_io (db)

DBCC getvalue (name)

DBCC icecapquery ('dbname', stored_proc_name [, #_times_to_icecap (-1 infinite, 0 turns off)])
Use 'dbcc icecapquery (printlist)' to see list of SP's to profile.
Use 'dbcc icecapquery (icecapall)' to profile all SP's.

DBCC incrementinstance (objectname, countername, instancename, value)

DBCC ind ( { 'dbname' | dbid }, { 'objname' | objid }, { indid | 0 | -1 | -2 } )

DBCC invalidate_textptr (textptr)

DBCC invalidate_textptr_objid (objid)

DBCC iotrace ( { 'dbname' | dbid | 0 | -1 } , { fileid | 0 }, bufsize, [ { numIOs | -1 } [, { timeout (sec) | -1 } [, printopt={ 0 | 1 }]]] )

DBCC latch ( address [, 'owners'] [, 'stackdumps'])

DBCC lock ([{'DUMPTABLE' | 'DUMPSTATS' | 'RESETSTATS' | 'HASH'}] | [{'STALLREPORTTHESHOLD', stallthreshold}])

DBCC lockobjectschema ('object_name')

DBCC log ([dbid[,{0|1|2|3|4}[,['lsn','[0x]x:y:z']|['numrecs',num]|['xdesid','x:y'] | ['extent','x:y']|['pageid','x:y']|['objid',{x,'y'}]|['logrecs', {'lop'|op}...]|['output',x,['filename','x']]...]]])

DBCC loginfo [({'database_name' | dbid})]

DBCC matview ({'PERSIST' | 'ENDPERSIST' | 'FREE' | 'USE' | 'ENDUSE'})

DBCC memobjlist [(memory object)]

DBCC memorymap

DBCC memorystatus

DBCC memospy

DBCC memusage ([IDS | NAMES], [Number of rows to output])

DBCC monitorevents ('sink' [, 'filter-expression'])

DBCC newalloc - please use checkalloc instead

DBCC no_textptr (table_id , max_inline)

DBCC page ( {'dbname' | dbid}, filenum, pagenum [, printopt={0|1|2|3} ][, cache={0|1} ])

DBCC perflog

DBCC perfmon

DBCC pglinkage (dbid, startfile, startpg, number, printopt={0|1|2} , targetfile, targetpg, order={1|0})

DBCC procbuf [({'dbname' | dbid}[, {'objname' | objid} [, nbufs[, printopt = { 0 | 1 } ]]] )]

DBCC prtipage (dbid, objid, indexid [, [{{level, 0} | {filenum, pagenum}}] [,printopt]])

DBCC pss [(uid[, spid[, printopt = { 1 | 0 }]] )]

DBCC readpage ({ dbid, 'dbname' }, fileid, pageid , formatstr [, printopt = { 0 | 1} ])

DBCC rebuild_log (dbname [, filename])

DBCC renamecolumn (object_name, old_name, new_name)

DBCC resource

DBCC row_lock (dbid, tableid, set) - Not Needed

DBCC ruleoff ({ rulenum | rulestring } [, { rulenum | rulestring } ]+)

DBCC ruleon ( rulenum | rulestring } [, { rulenum | rulestring } ]+)

DBCC setcpuweight (weight)

DBCC setinstance (objectname, countername, instancename, value)

DBCC setioweight (weight)

DBCC showdbaffinity

DBCC showfilestats [(file_num)]

DBCC showoffrules

DBCC showonrules

DBCC showtableaffinity (table)

DBCC showtext ('dbname', {textpointer | {fileid, pageid, slotid[,option]}})

DBCC showweights

DBCC sqlmgrstats

DBCC stackdump [( {uid[, spid[, ecid]} | {threadId, 'THREADID'}] )]

DBCC tab ( dbid, objid )

DBCC tape_control {'query' | 'release'}[,('\\.\tape')]

DBCC tec [( uid[, spid[, ecid]] )]

DBCC textall [({'database_name'|database_id}[, 'FULL' | FAST] )]

DBCC textalloc ({'table_name'|table_id}[, 'FULL' | FAST])

DBCC thaw_io (db)

DBCC upgradedb (db)

DBCC usagegovernor (command, value)

DBCC useplan [(number_of_plan)]

DBCC wakeup (spid)

DBCC writepage ({ dbid, 'dbname' }, fileid, pageid, offset, length, data)

In early versions of SQL Server - DBCC stood for "Database Consistency Checker", now renamed as Database Console Command.

Related (current) commands:

DBCC CHECK...
DBCC CLEANTABLE

DBCC dllname

DBCC DROPCLEANBUFFERS

DBCC FREE...
CACHE
DBCC HELP

DBCC INPUTBUFFER

DBCC OPENTRAN

DBCC OUTPUTBUFFER

DBCC PROCCACHE

DBCC SHOW_STATISTICS

DBCC SHRINKDATABASE

DBCC SHRINKFILE

DBCC SQLPERF

DBCC TRACE...

DBCC UPDATEUSAGE

DBCC USEROPTIONS


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