repeatable read

This can be used if the isolation level RR (Repeatable Read) is not used by any programs that operate on the same set of tables.

READPAST can only be specified in transactions operating at the READ COMMITTED or REPEATABLE READ isolation levels.

This leads to a database deadlock when the transaction isolation level of the connection is TRANSACTION_REPEATABLE_READ.

The concurrency decreases and data integrity increases when you move the isolation level from uncommitted read (UR) to repeatable read (RR).

If the transaction isolation mode is Repeatable Read, then the optimizer would base its choice purely on the estimated costs.

Repeatable read -- The transaction always reads the same data during the transaction.

REPEATABLE READ is a more restrictive isolation level than READ COMMITTED.

If the value is set to 1, then the optimizer behaves as it does for value 0 if the transaction isolation mode is not Repeatable Read.

Notice that the ANSI isolation levels and DB2 isolation levels have different names, and "repeatable read" has different meanings.

DB2's internal isolation level for this is referred to as Repeatable Read.

By default, MySQL uses the Repeatable Read isolation level for all transactions.

Using the Repeatable Read isolation level may result in an automatic table lock in some cases.

For an OLTP query, you can set the value to 0 or 1 with the isolation level not set to REPEATABLE READ.

Known as Repeatable Read in DB2, this is the strongest isolation level.

for example , reading from a read - only look up table doesn t require repeatable read , and uncommitted read is sufficient.

In SQL Server 2000, a user transaction was required if the isolation level was REPEATABLE READ or higher.

Any connections acquired from this data source will have a transaction isolation level set to REPEATABLE_READ.

set global transaction isolation level repeatable read;