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mysql.transaction_registry Table

The mysql.transaction_registry table was introduced in MariaDB 10.3.4 as part of system-versioned tables. It is used for transaction-precise versioning, and contains the following fields:

FieldTypeNullKeyDefaultDescription
transaction_idbigint(20) unsignedNOPrimaryNULL
commit_idbigint(20) unsignedNOUniqueNULL
begin_timestamptimestamp(6)NOMultiple0000-00-00 00:00:00.000000Timestamp when the transaction began (BEGIN statement), however see MDEV-16024.
committimestamp(6)NOMultiple0000-00-00 00:00:00.000000Timestamp when the transaction was committed.
isolation_levelenum('READ-UNCOMMITTED','READ-COMMITTED','REPEATABLE-READ','SERIALIZABLE')NONULLTransaction isolation level.
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