Handling problems reported by DBCC

The following table lists DBCC output messages that indicate problems. See the section “DBCC error messages” for a more extensive list of DBCC messages.

Table 13-6: Messages for problems DBCC cannot repair

DBCC message

Description/action

FP Lookup Table Inconsistencies

An unrepairable error, where the 1-byte or 2-byte FP is internally inconsistent.

VDO Incorrect First Available Fields

VDO Incorrect Next Available Fields

VDO Incorrect Used Count Fields

VDO Incorrect In-use Bitvec

VDO Incorrect In-use Bitmap

VDO Incorrect Partial Bitmap

VDO Incorrect Deleted Bitmaps

Unrepairable errors that can cause entire tables to be inaccessible. You must force drop the inconsistent table to resolve these errors.

Blocks with Multiple Owners

1st Multiple Owner PBN

Blocks in use by more than one database object. Drop the object that is reported as inconsistent.

DBCC Meta-data Errors

Blockmap Invalid Chunksize Error Count

Blockmap Compression Bit Error Count

Blockmap Invalid Block Number Error Count

An internal page mapping structure is inconsistent and the object needs to be dropped.

DBCC Inconsistent Disk Block Headers

DBCC Decompress Errors

The storage for the object is inconsistent and the object needs to be dropped.

See the following sections for information on resolving these unrepairable problems.