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Oracle® Database Reference
12c Release 1 (12.1)

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DBA_HIST_SERVICE_STAT displays the history of important service statistics tracked by the Workload Repository. The call rate statistics in this view can be used for making run-time routing decisions, for tracking service levels, and for per-instance diagnostics per call rate.

The elapsed timing for each call provides a relative value across instances for how well a node is processing SQL calls issued under a service name. When aggregation is enabled for the service name, this view provides historical data on the timing and work done for calls issued for the whole service. This view contains information from V$SERVICE_STATS.

Column Datatype NULL Description
DBID NUMBER NOT NULL Database ID for the snapshot
INSTANCE_NUMBER NUMBER NOT NULL Instance number for the snapshot
SERVICE_NAME_HASH NUMBER NOT NULL Hash of the service name
SERVICE_NAME VARCHAR2(64) NOT NULL Name of the service
STAT_ID NUMBER NOT NULL Statistic identifier
STAT_NAME VARCHAR2(64) NOT NULL Statistic name
VALUE NUMBER   Value of the statistic
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