8.170 V$RESULT_CACHE_OBJECTS

V$RESULT_CACHE_OBJECTS displays all the objects (both cached results and dependencies) and their attributes.

Column Datatype Description

ID

NUMBER

Identifier for the cache object (also the ID of the first block)

TYPE

VARCHAR2(10)

Type of the cache object:

  • Result

  • Dependency

STATUS

VARCHAR2(9)

Status of the object:

  • New - Result is still under construction

  • Published - Result is available for use

  • Bypass - Result will be bypassed from use

  • Expired - Result has exceeded expiration time

  • Invalid - Result is no longer available for use

BUCKET_NO

NUMBER

Internal hash bucket for the object

HASH

NUMBER

Hash value for the object

NAME

VARCHAR2(387)

Name (for example, SQL prefix or PL/SQL function name)

NAMESPACE

VARCHAR2(10)

Namespace:

  • SQL

  • PLSQL

  • KEY VECTOR

CREATION_TIMESTAMP

DATE

Time when the object was created

CREATOR_UID

NUMBER

UID that created the object

DEPEND_COUNT

NUMBER

Number of dependencies (TYPE = Result) or dependents (TYPE = Dependency)

BLOCK_COUNT

NUMBER

Total number of blocks in the cached object

SCN

NUMBER

Build SCN (TYPE = Result) or invalidation SCN (TYPE = Dependency)

COLUMN_COUNT

NUMBER

Number of columns in the cached resultFoot 1

PIN_COUNT

NUMBER

Number of active scans on this resultFoot 1

SCAN_COUNT

NUMBER

Total number of scans initiated on the cached resultFoot 1

ROW_COUNT

NUMBER

Total number of rows in the cached resultFoot 1

ROW_SIZE_MAX

NUMBER

Size of the largest row (in bytes)Foot 1

ROW_SIZE_MIN

NUMBER

Size of the smallest row (in bytes)Foot 1

ROW_SIZE_AVG

NUMBER

Average size of a row (in bytes)Foot 1

BUILD_TIME

NUMBER

Amount of time (in hundredths of a second) it took to build the cached resultFoot 1

LRU_NUMBER

NUMBER

LRU list position (the smaller the value, the more recent the usage)Foot 1

OBJECT_NO

NUMBER

Dictionary object number of the dependency objectFoot 2

INVALIDATIONS

NUMBER

Number of times the object has invalidated its dependentsFoot 2

SPACE_OVERHEAD

NUMBER

Overhead (in bytes) for the resultFoot 1

SPACE_UNUSED

NUMBER

Unused space (in bytes) for the resultFoot 1

CACHE_ID

VARCHAR2(387)

CacheId for the result (object name if it's a dependency)

CACHE_KEY

VARCHAR2(387)

CacheKey for the result (object name if it's a dependency)

CHECKSUM

NUMBER

Checksum for the result object. The checksum is computed over all the blocks in the result cache object minus the object header.

EDITION_ID

NUMBER

Shows the edition's object ID that was in use when the result was calculated

DB_LINK

VARCHAR2(3)

Possible values:

  • YES: If the result cache object references a remote database object

  • NO: If the result cache object does not reference a remote database object

CON_ID

NUMBER

The ID of the container to which the data pertains. Possible values include:

  • 0: This value is used for rows containing data that pertain to the entire CDB. This value is also used for rows in non-CDBs.

  • 1: This value is used for rows containing data that pertain to only the root

  • n: Where n is the applicable container ID for the rows containing data

Footnote 1

These columns are only valid for TYPE = Result; otherwise, they are NULL.

Footnote 2

These columns are only valid for TYPE = Dependency; otherwise, they are NULL.