Trigger capabilities for new apply process within HA4i

We had not realized the new apply process for HA4i version 7.1 did not have the trigger support built in, the IBM apply which uses the APYJRNCHG commands did not need to be told to ignore trigger requests it just did it! So we had to build a new trigger disable and enable process into the HA4i 7.1 *SAS apply process which allowed the trigger programs if any to be disabled while the apply process was applying updates etc but to be re-enabled as soon as the apply process had been stopped.

It seemed pretty easy at the start, all we had to do was identify which files had triggers and go in and disable them. But what about changes to the triggers and new triggers being added! We had to make sure that any D-TC, D-TD and D-TG entries are correctly applied and managed within the apply process. Anyhow we found a pretty neat way to manage it all and after a fair amount of testing and trials we now have a trigger support process that works. Still testing the new version and we have found a number of small issues when running in a complex customer environment but we think we have most of the problems ironed out now.. That is until the next one crops up!


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This entry was posted in Application Modernization, C Programming System i5, Disaster recovery, High Availability, Systems Management by Chris Hird. Bookmark the permalink.

About Chris Hird

Chris Hird President and Owner Shield Advanced Solutions. Hird first worked with high availability at IBM Havant in the United Kingdom in 1989, and he was responsible for the technical interface with the developers of HA products and setting up a support structure in the UK to support the IBM customers. He left IBM to set up Shield Software Services in 1993, which was an IBM business partner and a MiMiX reseller, and in 1997 he moved to Canada and launched Shield Advanced Solutions, which provides tools and utilities aimed mainly at supporting HA Environments. Programs in C and PHP on the i5.

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