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Documentation > MAC-PAC Reference and Help > Technical Support > Key Concepts and Procedures > Recovery Management > Online Rollback Procedures

Online Rollback Procedures

 

 

If an online failure or error occurs, rollback is accomplished in one of two ways:

·     If the failed program is using commitment control, then commitment control processing automatically rolls back any file updates that fall outside of a program-specified commit boundary (that is, update transactions that had not completed processing).  This maintains data base integrity; no further processing is required.

·     If the failed program is not in a commitment control environment, the following procedures for online rollback must be performed.

This figure summarizes these procedures.

Online Rollback

 

 

Display Recovery Management Menu

1.   Display the Recovery Management Menu by selecting Recovery Management from the System Processing Menu.

Display Failed Transactions List

2.   Select the Online Rollback option.  A list of all failed online transactions is displayed.  For a description of this screen, see the Screens section.

Modify List

3a.  Enter an X in the Select field of each displayed transaction for which recovery should not occur.  If there are more transactions than can be displayed on one screen, use the ROLL key to display the remaining transactions.  Once the entire list has been modified as desired, press F22 (Continue Recovery).  The Recovery Management Menu is redisplayed.  Processing continues at step 4.

OR

 

Return to Menu Without Recovery

3b. If you do not want to recover for any of the displayed transactions at this time, press F13 (Rtn w/o Recovery).  The Recovery Management Menu is redisplayed.  Processing continues at step 7.

Await Rollback Processing

4.   The online rollback job stream scans the user journal entries to find begin entries for which there are no corresponding end entries.  All related record updates are then rolled back.  For a more detailed account of this processing, see the section in this manual on Recovery Management Job Streams.

Check Reports

5.   Once the rollback is complete, check the On- Line Rollback Report (RM280) and examine all rolled back journal entries by file.  This will provide an accurate picture of the current data base status.

 

6.   Check the Async Work File Purge (RM290), Multi-line PO Receipt Async Recovery (RM292), Files Lock (purchase order, purchase order receipts, item/vendor relationships, quotations and requisitions) (RM295A and RM295B), Customer Master Lock Release (RM296), Online Transactions Pending Completion (RM297) Reports, and Unlocked Synchro Records (RM298). If the related files were not affected by the rollback process, these reports will be blank.

 

7.   Check the Online Transaction Failure Report (RM200).  This is a printed copy of all transactions that were displayed on the Failed Transactions List Screen.  If the user decided to remove certain transactions from this list (see step 3a, above), an X will appear in the Cancel Recovery Flag field.  If F13 was pressed, this X will not appear.  For a description of the above reports, see the Reports section.

Return

8.   Enter option 98 to return to the System Processing Menu.