Informix Guide to SQL: Tutorial
Chapter 7: Programming for a Multiuser Environment
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Simple Concurrency
If you are not sure which choice to make concerning locking and concurrency, and if your application is straightforward, have your program execute the following statements when it starts up (immediately after the first
DATABASE
statement):
SET LOCK MODE TO WAIT
SET ISOLATION TO REPEATABLE READ
Ignore the return codes from both statements. Proceed as if no other programs exist. If no performance problems arise, you do not need to read this section again.
Informix Guide to SQL: Tutorial
, version 9.1
Copyright © 1998, Informix Software, Inc. All rights reserved.
