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OceanBase Database

SQL - V4.1.0Enterprise Edition

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    SQL - V 4.1.0Enterprise Edition
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    • V 3.1.4 and earlier

    V$SESSION_WAIT

    Last Updated:2025-12-09 07:06:44  Updated
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    This view displays detailed information about the current wait events in each session. Each wait event has three parameters.

    Fields

    Field Type Nullable Description
    SID bigint(20) NO The ID of the session.
    CON_ID bigint(20) NO The ID of the tenant.
    SVR_IP varchar(46) NO The IP address of the OBServer.
    SVR_PORT bigint(20) NO The port number of the OBServer.
    EVENT varchar(64) NO The name of the event.
    P1TEXT varchar(64) NO The description of the first parameter of the wait event.
    P1 bigint(20) unsigned NO The value of the first parameter of the wait event.
    P2TEXT varchar(64) NO The description of the second parameter of the wait event.
    P2 bigint(20) unsigned NO The value of the second parameter of the wait event.
    P3TEXT varchar(64) NO The description of the third parameter of the wait event.
    P3 bigint(20) unsigned NO The value of the third parameter of the wait event.
    WAIT_CLASS_ID bigint(20) NO The ID of the class to which the wait event belongs.
    WAIT_CLASS# bigint(20) NO The sequence number of the class to which the wait event belongs.
    WAIT_CLASS varchar(64) NO The name of the class to which the wait event belongs.
    STATE varchar(19) NO The state of the current wait event. Valid values:
  • Waiting: The session is waiting for the event.
  • Waited unknown time: The time information cannot be obtained because timed_statistics is set to false. In other words, a wait event has occurred but lasted only for a very short period.
  • Wait short time: A wait event has occurred but lasted for less than one unit of time, and therefore was not recorded.
  • Waited known time: If the session has obtained the required resources after the wait, it will switch from the Waiting state to this state.
  • WAIT_TIME_MICRO bigint(20) NO The wait time in microseconds. It indicates the elapsed wait time if the session is in waiting state and indicates the total wait time of the last wait if the session is not in the waiting state.
    TIME_REMAINING_MICRO bigint(20) NO
  • Value greater than 0: The wait time of the last wait in microseconds. The session is not in Waiting state.
  • 0: The session is waiting for the current event.
  • -1: The wait time of the last wait is shorter than one measurement unit, and the session is not in Waiting state.
  • -2: Time statistics collection is disabled, and the session is not in Waiting state.
  • TIME_SINCE_LAST_WAIT_MICRO bigint(20) NO The amount of time in microseconds elapsed since the end of the last wait. The value is 0 if the session is in Waiting state.

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