PM70580: multisite bad replay of rmhlink leads to db_dumper error (mkreplica / reformatvob)

Rational ClearCase Fix Pack 08 (7.1.2.8) for 7.1.2
Rational ClearCase Fix Pack 04 (8.0.0.4) for 8.0
Rational ClearCase Fix Pack 14 (7.1.2.14) for 7.1.2
Rational ClearCase Fix Pack 11 (8.0.0.11) for 8.0
Rational ClearCase Fix Pack 12 (8.0.0.12) for 8.0
Rational ClearCase Fix Pack 15 (7.1.2.15) for 7.1.2
Rational ClearCase Fix Pack 13 (8.0.0.13) for 8.0
Rational ClearCase Fix Pack 16 (7.1.2.16) for 7.1.2
Rational ClearCase Fix Pack 17 (7.1.2.17) for 7.1.2
Rational ClearCase Fix Pack 14 (8.0.0.14) for 8.0
Rational ClearCase Fix Pack 18 (7.1.2.18) for 7.1.2
Rational ClearCase Fix Pack 15 (8.0.0.15) for 8.0
Rational ClearCase Fix Pack 19 (7.1.2.19) for 7.1.2
Rational ClearCase Fix Pack 16 (8.0.0.16) for 8.0
Rational ClearCase Fix Pack 17 (8.0.0.17) for 8.0
Rational ClearCase Fix Pack 18 (8.0.0.18) for 8.0
Rational ClearCase Fix Pack 19 (8.0.0.19) for 8.0
Rational ClearCase Fix Pack 20 (8.0.0.20) for 8.0
Rational ClearCase Fix Pack 21 (8.0.0.21) for 8.0

APAR status

• Closed as program error.

Error description

• In certain circumstances a UCM rebase operation causes the
  removal of a Foundation hyperlink.
    The Foundation hyperlink is always FROM a baseline TO a
  'timeline'.
    There is a reference to the hyperlink in the 'Activity
  timeline' string of the timeline object,
      which gets removed when the timeline gets removed.
  
  However, when the baseline and the timeline exist in different
  UCM project VOBs,
     then while an oplog entry is generated for both project VOBs,
  the processing to remove the entry from the 'Activity timeline'
  string of the timeline object does not occur when the oplog
  entries are replayed.
  
  Steps to reproduce:
   Create a UCM stream based on a composite baseline with a
  multilevel hierarchy.
   Modify a component at the bottom level of the hierarchy and
  make baselines.
   Rebase, overriding the intermediate level root-less component
  with a composite baseline created in a project in a different
  project VOB
      At the same time, override this new foundation with the
  current foundation of the bottom level component that was
  modified.
        [trying to keep the use case simple]
   Make Baselines again.
   Rebase, removing all overrides.
   Synchronize all changes to another replica site.
   Attempt to mkreplica a third replica of the project VOB from
  this second site.
   The mkreplica fails with
  
       ...
       120000 events dumped (thru Fri Jun 29 10:35:49 2012)...
       121000 events dumped (thru Mon Jul 02 14:20:15 2012)...
       db_dumper.54: Error: Unexpected error from database library
  (8) in '/vobs/atria/lib/db/db__dump.c' line 2853
       db_dumper.54: Error: Error from libdb (8)
       multitool: Error: Could not dump database.
       multitool: Error: Replica creation terminated  prematurely
  due to error -- aborting.
  
  Workaround
  Once this 'db_dumper' error has occurred, a special database
  repair tool must be supplied by Rational Client Support.
  

Local fix

Problem summary

• When a rebase backward/sideways is done for a rootless component
   it causes the removal of a Foundation hyperlink.
    The Foundation hyperlink is always FROM a baseline TO the
  "timeline".
    There is a reference to the hyperlink in the "Activity
  timeline" string of the timeline object,
      which gets removed when the timeline gets removed.
  
  However, when the baseline and the timeline exist in different
  UCM project VOBs,
    then while an oplog entry is generated for both project VOBs,
  the processing to remove the entry from the "Activity timeline"
  string of the timeline object does not occur when the oplog
  entries are replayed.
  

Problem conclusion

• A fix is available in ClearCase versions 7.1.2.8 and 8.0.0.4
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  CC&CC MSITE UNI

• Fixed component ID

  5724G3301

Applicable component levels

• R712 PSY

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