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Oracle® Database Reference
10g Release 1 (10.1)

Part Number B10755-01
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DBA_HIST_SEG_STAT

DBA_HIST_SEG_STAT displays historical information about segment-level statistics. This view captures the top segments based on a set of criteria and captures information from V$SEGSTAT. The total value is the value of the statistics since instance startup. The delta value is the value of the statistics from the BEGIN_INTERVAL_TIME to the END_INTERVAL_TIME in the DBA_HIST_SNAPSHOT view.

Column Datatype NULL Description
SNAP_ID NUMBER   Unique snapshot ID
DBID NUMBER   Database ID for the snapshot
INSTANCE_NUMBER NUMBER   Instance number for the snapshot
TS# NUMBER   Tablespace number
OBJ# NUMBER   Dictionary object number
DATAOBJ# NUMBER   Data object number
LOGICAL_READS_TOTAL NUMBER   Cumulative value for logical reads
LOGICAL_READS_DELTA NUMBER   Delta value for logical reads
BUFFER_BUSY_WAITS_TOTAL NUMBER   Cumulative value for buffer busy waits
BUFFER_BUSY_WAITS_DELTA NUMBER   Delta value for buffer busy waits
DB_BLOCK_CHANGES_TOTAL NUMBER   Cumulative value for db block changes
DB_BLOCK_CHANGES_DELTA NUMBER   Delta value for db block changes
PHYSICAL_READS_TOTAL NUMBER   Cumulative value for physical reads
PHYSICAL_READS_DELTA NUMBER   Delta value for physical reads
PHYSICAL_WRITES_TOTAL NUMBER   Cumulative value for physical writes
PHYSICAL_WRITES_DELTA NUMBER   Delta value for physical writes
PHYSICAL_READS_DIRECT_TOTAL NUMBER   Cumulative value for physical reads direct
PHYSICAL_READS_DIRECT_DELTA NUMBER   Delta value for physical reads direct
PHYSICAL_WRITES_DIRECT_TOTAL NUMBER   Cumulative value for physical writes direct
PHYSICAL_WRITES_DIRECT_DELTA NUMBER   Delta value for physical writes direct
ITL_WAITS_TOTAL NUMBER   Cumulative value for ITL waits
ITL_WAITS_DELTA NUMBER   Delta value for ITL waits
ROW_LOCK_WAITS_TOTAL NUMBER   Cumulative value for row lock waits
ROW_LOCK_WAITS_DELTA NUMBER   Delta value for row lock waits
GC_CR_BLOCKS_SERVED_TOTAL NUMBER   Cumulative value for global cache CR blocks served
GC_CR_BLOCKS_SERVED_DELTA NUMBER   Delta value for global cache CR blocks served
GC_CU_BLOCKS_SERVED_TOTAL NUMBER   Cumulative value for global cache current blocks served
GC_CU_BLOCKS_SERVED_DELTA NUMBER   Delta value for global cache current blocks served
SPACE_USED_TOTAL NUMBER   Cumulative value for space used
SPACE_USED_DELTA NUMBER   Delta value for space used
SPACE_ALLOCATED_TOTAL NUMBER   Cumulative value for space allocated
SPACE_ALLOCATED_DELTA NUMBER   Delta value for space allocated
TABLE_SCANS_TOTAL NUMBER   Cumulative value for table scans
TABLE_SCANS_DELTA NUMBER   Delta value for table scans