4.6 DBA_ACCHK_STATISTICS_SUMMARY

DBA_ACCHK_STATISTICS_SUMMARY displays a summary of Application Continuity protection statistics for each session that executed during an Application Continuity Protection Check (ACCHK) workload run.

ACCHK should be used on a running workload. Sessions that are terminated are not included in this view.

The ACCHK_READ role allows users with no administrative privileges to query this view.

Column Datatype NULL Description

INST_ID

NUMBER

NOT NULL

Identifier for the instance for the session

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

CON_UIDFoot 1

NUMBER

NOT NULL

Unique ID of the container used by the session

CON_ID_EXTFoot 1

NUMBER

  

Container ID used by the session for external recognition

SERVICE_NAME

VARCHAR2(64)

Service name of the session

FAILOVER_TYPE

VARCHAR2(16)

Indicates the FAILOVER_TYPE service setting for the session. Possible values:

  • AUTO - Transparent Application Continuity (TAC) was enabled for the session

  • TRANSACTION - Application Continuity (AC) was enabled for the session

  • NONE - Failover was disabled for the session

FAILOVER_RESTORE

VARCHAR2(16)

Indicates the FAILOVER_RESTORE service setting for the session. Possible values:

  • AUTO - Transparent Application Continuity

  • LEVEL1 - Application Continuity

  • NONE - Session state is not restored at failover

RESET_STATE

VARCHAR2(16)

Indicates the RESET_STATE service setting for the session. Possible values:

  • LEVEL1 - The session state was cleaned at the end of a request

  • NONE - The session state was not cleaned at the end of a request

TOTAL_REQUESTS

NUMBER

Number of requests received for this session

PROTECTED_CALLS_PERCENT

NUMBER

Percentage of user calls within requests protected by Application Continuity for failover

PROTECTED_TIME_PERCENT

NUMBER

Percentage of time spent within requests protected by Application Continuity for failover

AVG_USER_CALLS_IN_REQUESTS

NUMBER

Average number of user calls received from the application within requests (between begin request and end request)

AVG_PROT_CALLS_IN_REQUESTS

NUMBER

Average number of user calls protected by Application Continuity within requests (between begin request and end request)

AVG_TIME_IN_REQUESTS

NUMBER

Average time (in microseconds) spent on user calls within requests (between begin request and end request)

AVG_TIME_PROTECTED_IN_REQUESTS

NUMBER

Average time (in microseconds) spent on user calls protected by Application Continuity within requests (between begin request and end request)

MAX_USER_CALLS_PER_REQUESTFoot 1

NUMBER

  

Maximum number of user calls received from the application per request (between begin request and end request)

MAX_PROT_CALLS_PER_REQUESTFoot 1

NUMBER

  

Maximum number of user calls protected by Application Continuity received from the application per request (between begin request and end request)

Footnote 1 This column is available starting with Oracle Database 19c, Release Update 19.19.

Note:

This view is available starting with Oracle Database 19c, Release Update 19.11.

For Oracle Database 19c, Release Update 19.11 through Release Update 19.18, this view is not created by default. To create this view, you must run the DBMS_APP_CONT_ADMIN.ACCHK_VIEWS procedure. See Oracle Database PL/SQL Packages and Types Reference for more information.

Starting with Oracle Database 19c, Release Update 19.19, this view is created by default.