Program temporary fix: Difference between revisions

Revision as of 23:03, 7 December 2017

Revision as of 23:29, 7 December 2017

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==PTF usage==

PTFs used to be distributed in a group on a so-called ''Program Update Tape'' (''PUT'') or ''Recommended Service Upgrade'' (''RSU''), approximately on a monthly basis. They can now be downloaded straight to the system through a direct connection to IBM support. In some instances IBM will release a "Cumulative PTF Pack", a large number of fixes which function best as a whole, and are sometimes codependent. When this happens, IBM issues compact discs containing the entire PTF pack, which can be loaded directly onto the system from its media drive. The PTFs are processed using [[SMP/E]] (System Modification Program/Extended) in several stages over a course of weeks.

One reason for the use of physical media is size, and related (default) size limits. "By default, the /home file system on VIOS is only 10GB in size."<ref name=TecTip>{{cite web |title=Populating the VIOS Virtual Media Repository

|author=Glenn Robinson |date=October 28, 2015

|url=http://powerwire.eu/tech-tip-populating-the-vios-virtual-media-repository}}</ref> If the "Cumulative PTF Pack" is larger than the default, "If you try (to) FTP 17GB of ISO images you will run out of space."

The PTFs are processed using [[SMP/E]] (System Modification Program/Extended) in several stages over a course of weeks.

# ''Receive'' (load) the proper PTF to the HA (non-production) system

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These repairs to IBM software are often in response to APARs ([[Authorised Program Analysis Report]]s) submitted by customers and others and acted on by IBM, and are a common first step to resolving software errors. It is generally expected by the customer that the problem would be fully corrected in the next release (version) of the relevant product.

==Comparison to APAR==