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Oracle® Database Reference
12c Release 1 (12.1)

E17615-24
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V$WAITSTAT

V$WAITSTAT displays block contention statistics. This table is only updated when timed statistics are enabled.

Column Datatype Description
CLASS VARCHAR2(18) Class of the block
COUNT NUMBER Number of waits by this OPERATION for this CLASS of block
TIME NUMBER Sum of all wait times for all the waits by this OPERATION for this CLASS of block (in centiseconds)
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