Skip Headers
Oracle® Database Reference
12c Release 1 (12.1)

E17615-23
Go to Documentation Home
Home
Go to Book List
Book List
Go to Table of Contents
Contents
Go to Index
Index
Go to Master Index
Master Index
Go to Feedback page
Contact Us

Go to previous page
Previous
Go to next page
Next
PDF · Mobi · ePub

DBA_HIST_PGASTAT

DBA_HIST_PGASTAT displays historical PGA memory usage statistics as well as statistics about the automatic PGA memory manager when it is enabled. This view contains snapshots of V$PGASTAT.

Column Datatype NULL Description
SNAP_ID NUMBER NOT NULL Unique snapshot ID
DBID NUMBER NOT NULL Database ID for the snapshot
INSTANCE_NUMBER NUMBER NOT NULL Unique snapshot ID
NAME VARCHAR2(64) NOT NULL Name of the statistic:
  • aggregate PGA auto target

  • aggregate PGA target parameter

  • bytes processed

  • cache hit percentage

  • extra bytes read/written

  • global memory bound

  • max processes count

  • maximum PGA allocated

  • maximum PGA used for auto workareas

  • maximum PGA used for manual workareas

  • over allocation count

  • PGA memory freed back to OS

  • process count

  • recompute count (total)

  • total freeable PGA memory

  • total PGA allocated

  • total PGA inuse

  • total PGA used for auto workareas

  • total PGA used for manual workareas

See Also: V$PGASTAT for descriptions of the statistics

VALUE NUMBER   Statistic value
CON_DBID NUMBER   The database ID of the PDB for the sampled session
CON_ID NUMBER   The ID of the container that CON_DBID identifies. 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:

"V$PGASTAT"