Performance Schema events_transactions_current Table

The events_transactions_current table contains current transaction events for each thread.

The table size cannot be figured, and always stores one row for each thread, showing the current status of the thread's most recent monitored transaction event.

The table contains the following columns:

+---------------------------------+------------------------------------------------+------+-----+---------+-------+
| Field                           | Type                                           | Null | Key | Default | Extra |
+---------------------------------+------------------------------------------------+------+-----+---------+-------+
| THREAD_ID                       | bigint(20) unsigned                            | NO   |     | NULL    |       |
| EVENT_ID                        | bigint(20) unsigned                            | NO   |     | NULL    |       |
| END_EVENT_ID                    | bigint(20) unsigned                            | YES  |     | NULL    |       |
| EVENT_NAME                      | varchar(128)                                   | NO   |     | NULL    |       |
| STATE                           | enum('ACTIVE','COMMITTED','ROLLED BACK')       | YES  |     | NULL    |       |
| TRX_ID                          | bigint(20) unsigned                            | YES  |     | NULL    |       |
| GTID                            | varchar(64)                                    | YES  |     | NULL    |       |
| XID_FORMAT_ID                   | int(11)                                        | YES  |     | NULL    |       |
| XID_GTRID                       | varchar(130)                                   | YES  |     | NULL    |       |
| XID_BQUAL                       | varchar(130)                                   | YES  |     | NULL    |       |
| XA_STATE                        | varchar(64)                                    | YES  |     | NULL    |       |
| SOURCE                          | varchar(64)                                    | YES  |     | NULL    |       |
| TIMER_START                     | bigint(20) unsigned                            | YES  |     | NULL    |       |
| TIMER_END                       | bigint(20) unsigned                            | YES  |     | NULL    |       |
| TIMER_WAIT                      | bigint(20) unsigned                            | YES  |     | NULL    |       |
| ACCESS_MODE                     | enum('READ ONLY','READ WRITE')                 | YES  |     | NULL    |       |
| ISOLATION_LEVEL                 | varchar(64)                                    | YES  |     | NULL    |       |
| AUTOCOMMIT                      | enum('YES','NO')                               | NO   |     | NULL    |       |
| NUMBER_OF_SAVEPOINTS            | bigint(20) unsigned                            | YES  |     | NULL    |       |
| NUMBER_OF_ROLLBACK_TO_SAVEPOINT | bigint(20) unsigned                            | YES  |     | NULL    |       |
| NUMBER_OF_RELEASE_SAVEPOINT     | bigint(20) unsigned                            | YES  |     | NULL    |       |
| OBJECT_INSTANCE_BEGIN           | bigint(20) unsigned                            | YES  |     | NULL    |       |
| NESTING_EVENT_ID                | bigint(20) unsigned                            | YES  |     | NULL    |       |
| NESTING_EVENT_TYPE              | enum('TRANSACTION','STATEMENT','STAGE','WAIT') | YES  |     | NULL    |       |
+---------------------------------+------------------------------------------------+------+-----+---------+-------+