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<h1>9. SQL Procedure Language Guide</h1>
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<h2>9.14. Procedures and Transactions</h2>
<p>
A procedure call executed by a client is just like any other SQL
statement. It executes in the context of the client's active transaction.
If the connection is in autocommit mode the transaction is automatically
committed if the procedure returns successfully and rolled back if
the procedure returns with an error. If the connection is in manual
commit mode, a possible procedure error has no effect on the client's
transaction, unless the error is a transaction error, e.g. timeout
or deadlock.
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<p>
For best performance, we recommend using procedures in autocommit
mode. In this way, a single client-server exchange will suffice to carry
out the whole transaction. This will also conveniently roll back the
transaction if the procedure exited as a result of an unhandled SQLSTATE
or a 'not found' condition.
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Procedures can commit or rollback transactions using commit work and rollback work statements.
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