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I want to know what isolation level is set for current Mysql database. How can find it out? I tried searching it on the google but did not find it.
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To check the isolation level(s) present in the statement, the simplest way is to look at the T-SQL itself and see if any hints are present. If not, it is operating at the isolation level of the connection.
InnoDB offers all four transaction isolation levels described by the SQL:1992 standard: READ UNCOMMITTED , READ COMMITTED , REPEATABLE READ , and SERIALIZABLE .
The SET TRANSACTION Statement in MYSQL is used to set the values to the characteristics of the current transaction such as transaction isolation level and access mode.
Transaction isolation levels are a measure of the extent to which transaction isolation succeeds. In particular, transaction isolation levels are defined by the presence or absence of the following phenomena: Dirty Reads A dirty read occurs when a transaction reads data that has not yet been committed.
check global transaction level (mysql8+)
SELECT @@transaction_ISOLATION;
check session transaction level (mysql8+)
SELECT @@global.transaction_ISOLATION;
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