# java.sql.Connection.setTransactionIsolation method

java.sql.Connection.TRANSACTION_SERIALIZABLE, java.sql.Connection.TRANSACTION_REPEATABLE_READ, java.sql.Connection.TRANSACTION_READ_COMMITTED, and java.sql.Connection.TRANSACTION_READ_UNCOMMITTED transaction isolations are available from a Derby database.

TRANSACTION_READ_COMMITTED is the default isolation level.

Changing the current isolation for the connection with setTransactionIsolation commits the current transaction and begins a new transaction. For more details about transaction isolation, see "Locking, concurrency, and isolation" in the Derby Developer's Guide.

Parent topic: java.sql.Connection interface
Related concepts
Connection functionality not supported
Related reference
java.sql.Connection.setReadOnly method
java.sql.Connection.isReadOnly method