7.264 V$HEAT_MAP_SEGMENT

V$HEAT_MAP_SEGMENT displays real-time segment access information.

Column Datatype Description

OBJECT_NAME

VARCHAR2(128)

Name of the object

SUBOBJECT_NAME

VARCHAR2(128)

Name of the subobject

OBJ#

NUMBER

Object number

DATAOBJ#

NUMBER

Data object number

TS#

NUMBER

ID of the tablespace containing the segment whose heat map is tracked

TRACK_TIME

DATE

Timestamp of current activity tracking

SEGMENT_WRITE

VARCHAR2(3)

Indicates whether the segment has write access: (YES or NO)

SEGMENT_READ

VARCHAR2(3)

Indicates whether the segment has read access: (YES or NO)

FULL_SCAN

VARCHAR2(3)

Indicates whether the segment has full table scan: (YES or NO)

LOOKUP_SCAN

VARCHAR2(3)

Indicates whether the segment has lookup scan: (YES or NO)

N_SEGMENT_WRITE

NUMBER

Number of segment writes

N_FULL_SCAN

NUMBER

Number of table scans

N_LOOKUP_SCAN

NUMBER

Number of lookup scans

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

See Also:

"ALL_HEAT_MAP_SEGMENT"