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Oracle9i Database Reference
Release 2 (9.2)

Part Number A96536-01
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Dynamic Performance (V$) Views, 35 of 237


V$COPY_CORRUPTION

This view displays information about datafile copy corruptions from the control file.

Column Datatype Description

RECID

NUMBER

Copy corruption record ID

STAMP

NUMBER

Copy corruption record stamp

COPY_RECID

NUMBER

Datafile copy record ID

COPY_STAMP

NUMBER

Datafile copy record stamp

FILE#

NUMBER

Datafile number

BLOCK#

NUMBER

First block of the corrupted range

BLOCKS

NUMBER

Number of contiguous blocks in the corrupted range

CORRUPTION_CHANGE#

NUMBER

Change# at which the logical corruption was detected. Set to 0 to indicate media corruption.

MARKED_CORRUPT

VARCHAR2(3)

(YES | NO) If set to YES the blocks were not marked corrupted in the datafile, but were detected and marked as corrupted while making the datafile copy

CORRUPTION_TYPE

VARCHAR2(9)

Type of block corruption in the datafile:

  • ALL ZERO - Block header on disk contained only zeros. The block may be valid if it was never filled and if it is in an Oracle7 file. The buffer will be reformatted to the Oracle8 standard for an empty block.
  • FRACTURED - Block header looks reasonable, but the front and back of the block are different versions.
  • CHECKSUM - optional check value shows that the block is not self-consistent. It is impossible to determine exactly why the check value fails, but it probably fails because sectors in the middle of the block are from different versions.
  • CORRUPT - Block is wrongly identified or is not a data block (for example, the data block address is missing)
  • LOGICAL - Specifies the range is for logically corrupt blocks. CORRUPTION_CHANGE# will have a nonzero value.

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