Sunday, April 8, 2018

Patch Set Updates And Bundle Patches

Patch Set Updates And Bundle Patches

In gist,, 
  CPU/SPU -  Security fixed
  PSU -          CPU plus Regression fixed
  BP    -          PSU plus datapatch ( interim/one off patches)

Patch Set Update (PSU) contains usually security fixes and regression fixes, i.e. bug fixes.
Differences between PSU / BP and RU / RUR
Typical Patch Set Update (PSU) – quarterly
Whereas a Proactive Bundle Patch (BP) was a superset of a PSU containing the PSU but optimizer fixes and functional fixes which may be sometimes feature extensions as well.
Differences between PSU / BP and RU / RUR
Typical Bundle Patch (BP) – quarterly released
And you choose either one train usually. But you could also change from PSUs to BPs or vice versa. Your flow would actually look like this:
Differences between PSU / BP and RU / RUR
Quarterly Patching with either PSUs or BPs – every quarter gets new fixes, PSUs and BPs, each are cumulative to themselves
As PSUs and BPs, each are cumulative you’ll get the fixes from all previous PSUs or BPs for the same release included as well. The PSU a quarter later has new security fixes and new regression fixes added, the Bundle Patch in addition gets new optimizer and functional fixes and of course the same new security and regression fixes the PSU has gotten.

Release Updates

Release Updates (RU) look pretty similar to Bundle Patches (BP):
Differences between PSU / BP and RU / RUR
The first Release Update (RU-1)
The following second Release Update contains everything from Release Update 1 plus new fixes in all four areas (marked in dark red/purple below). RUs are cumulative as well as the BPs were.
Differences between PSU / BP and RU / RUR
The second Release Update (RU-2)
RUs get released quarterly at the usual dates.

Release Update Revisions

Release Update Revision (RUR) is different from an PSU. At the time of the release of RU1 there won’t be an RUR yet. The first RUR will be released containing the entire first RU – plus additional fixes on top. Regression fixes are fixes for misbehavior. They usually hit a lot of customers.
Differences between PSU / BP and RU / RUR
First Release Update Revision (RUR-1)
Actually the first RUR will be released usually a quarter after the first Release Update (RU). It will include all fixes from  Release Update 1 (RU-1) – and add only new security and regression fixes on top. But no new optimizer or functional fixes. When you compare it with the picture above (“The second Release Update”) you’ll spot the same security and regression fixes.
At this date you will have the choice now:
  • Use the Release Update Revision (RUR-1)

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