74 lines
4.7 KiB
HTML
74 lines
4.7 KiB
HTML
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<meta name="DC.Title" content="Journaled changes with trigger programs" />
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<meta name="abstract" content="The system does not call trigger programs when it is applying or removing journal entries." />
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<meta name="description" content="The system does not call trigger programs when it is applying or removing journal entries." />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2004, 2006" />
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<title>Journaled changes with trigger programs</title>
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</head>
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<body id="rzakiapywthtrig"><a name="rzakiapywthtrig"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Journaled changes with trigger programs</h1>
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<div><p>The system does not call trigger programs when it is applying or
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removing journal entries.</p>
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<p>If an event occurs that would normally cause a trigger program to run,
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it is up to you to ensure that the processing performed by the trigger program
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is recovered correctly.</p>
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<p>Normal recovery processing will work correctly if all of the following
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are true:</p>
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<ul><li>The trigger program only performs processing on object types which can
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be journaled and applied.</li>
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<li>The processed object types are journaled.</li>
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<li>Journaled changes are applied to or are removed from all the objects that
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are affected by the trigger program.</li>
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</ul>
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<p>If additional work is performed by the trigger program or objects other
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than object types which can be journaled and applied are updated, you must
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use user-written programs to recover the work performed by the trigger program.</p>
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<p>If you use trigger programs to perform these actions, consider using the
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Send Journal Entry (QJOSJRNE) API to send journal entries when trigger programs
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are called. See Send your own journal entries. To help with recovery, you
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can develop a program to retrieve these entries and perform the same operations.</p>
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<p>The output format for journal entries (except the *TYPE1, *TYPE2, and *TYPE3
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formats) and the QjoRetrieveJournalEntries API interface include information
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about whether a journal entry was created because of actions that were performed
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when a trigger program was called.</p>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzakiapyjrnchg.htm" title="One of the primary advantages of journaling is its ability to return a journaled object to its current state since the last save.">Recover journaled objects</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="rzakisndjrne.htm" title="Use the Send Journal Entry (SNDJRNE) command or the Send Journal Entry (QJOSJRNE) API to add your own entries to a journal. The system places these entries in the journal's attached journal receiver along with the system-created journal entries.">Send your own journal entries</a></div>
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</div>
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<div class="relref"><strong>Related reference</strong><br />
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<div><a href="../rzahf/rzahftrigcontable.htm">Work with triggers and constraints</a></div>
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<div><a href="../apis/QJOSJRNE.htm">Send Journal Entry (QJOSJRNE) API</a></div>
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<div><a href="../apis/QJORJRNE.htm">Retrieve Journal Entries (QjoRetrieveJournalEntries) API</a></div>
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</div>
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</div>
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</body>
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</html>
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