Syntax options:

    WAIT | NOWAIT | DEFAULT WAIT

    Specifies what the LOCK TABLE statement does when it encounters
    a locked table. If you specify WAIT, the statement waits for
    other transactions to complete and then proceeds. If you specify
    NOWAIT, your transaction returns an error message when it
    encounters a locked table. If you specify DEFAULT WAIT, then
    the lock mode specified for the current transaction is used.
    If you specify a different lock mode than was specified for the
    transaction, the mode you specify with the LOCK TABLE statement
    takes precedence, unless the table is already reserved.

    The WAIT clause is the default.