metadata_locks

Overview

In 11.4 ES, 10.6 ES, 10.6 CS, 10.5 ES, 10.5 CS:

A description for this Performance-schema Table has not yet been added to this Documentation.

In 11.4 ES, 10.6 ES, 10.5 ES:

A description for this Performance-schema Table has not yet been added to this Documentation.

In 10.4 ES, 10.4 CS, 10.3 ES, 10.3 CS, 10.2 ES, 10.2 CS:

Not present

In 10.4 ES:

Not present

USAGE

DETAILS

SYNONYMS

SCHEMA

CREATE TABLE `metadata_locks` (
  `OBJECT_TYPE` varchar(64) NOT NULL COMMENT 'Object type. One of BACKUP, COMMIT, EVENT, FUNCTION, GLOBAL, LOCKING SERVICE, PROCEDURE, SCHEMA, TABLE, TABLESPACE, TRIGGER (unused) or USER LEVEL LOCK.',
  `OBJECT_SCHEMA` varchar(64) DEFAULT NULL COMMENT 'Object schema.',
  `OBJECT_NAME` varchar(64) DEFAULT NULL COMMENT 'Object name.',
  `OBJECT_INSTANCE_BEGIN` bigint(20) unsigned NOT NULL COMMENT 'Address in memory of the instrumented object.',
  `LOCK_TYPE` varchar(32) NOT NULL COMMENT 'Lock type. One of BACKUP_FTWRL1, BACKUP_START, BACKUP_TRANS_DML, EXCLUSIVE, INTENTION_EXCLUSIVE, SHARED, SHARED_HIGH_PRIO, SHARED_NO_READ_WRITE, SHARED_NO_WRITE, SHARED_READ, SHARED_UPGRADABLE or SHARED_WRITE.',
  `LOCK_DURATION` varchar(32) NOT NULL COMMENT 'Lock duration. One of EXPLICIT (locks released by explicit action, for example a global lock acquired with FLUSH TABLES WITH READ LOCK) , STATEMENT (locks implicitly released at statement end) or TRANSACTION (locks implicitly released at transaction end).',
  `LOCK_STATUS` varchar(32) NOT NULL COMMENT 'Lock status. One of GRANTED, KILLED, PENDING, POST_RELEASE_NOTIFY, PRE_ACQUIRE_NOTIFY, TIMEOUT or VICTIM.',
  `SOURCE` varchar(64) DEFAULT NULL COMMENT 'Source file containing the instrumented code that produced the event, as well as the line number where the instrumentation occurred. This allows one to examine the source code involved.',
  `OWNER_THREAD_ID` bigint(20) unsigned DEFAULT NULL COMMENT 'Thread that requested the lock.',
  `OWNER_EVENT_ID` bigint(20) unsigned DEFAULT NULL COMMENT 'Event that requested the lock.'
)

PARAMETERS

SKYSQL

PRIVILEGES

EXAMPLES

ERROR HANDLING

FEATURE INTERACTION

RESPONSES

DIAGNOSIS

ISO 9075:2016

CHANGE HISTORY

Release Series

History

11.4 Enterprise

  • Not present.

10.6 Enterprise

  • Present starting in MariaDB Enterprise Server 10.6.4-1.

  • Schema changed in MariaDB Enterprise Server 10.6.5-2: ...

10.6 Community

  • Present starting in MariaDB Community Server 10.6.0.

  • Schema changed in MariaDB Community Server 10.6.5: ...

10.5 Enterprise

  • Added in MariaDB Enterprise Server 10.5.3-1.

  • Schema changed in MariaDB Enterprise Server 10.5.13-9: ...

10.5 Community

  • Added in MariaDB Community Server 10.5.2.

  • Schema changed in MariaDB Community Server 10.5.13: ...

10.4 Enterprise

  • Not present.

10.4 Community

  • Not present.

10.3 Enterprise

  • Not present.

10.3 Community

  • Not present.

10.2 Enterprise

  • Not present.

10.2 Community

  • Not present.

Release Series

History

11.4 Enterprise

  • Not present.

10.6 Enterprise

  • Present starting in MariaDB Enterprise Server 10.6.4-1.

  • Schema changed in MariaDB Enterprise Server 10.6.5-2: ...

10.5 Enterprise

  • Added in MariaDB Enterprise Server 10.5.3-1.

  • Schema changed in MariaDB Enterprise Server 10.5.13-9: ...

10.4 Enterprise

  • Not present.

EXTERNAL REFERENCES