R12.2 eBusiness Suite EBS – During ADOP phase = prepare data dictionary corruption missing parent

During an online patching session with ADOP, when the prepare phase checks the data dictionary integrity, you receive the following error:

R12.2 eBusiness Suite EBS – During ADOP phase = prepare data dictionary corruption missing parent:
Verifying data dictionary.
[UNEXPECTED]Data dictionary corrupted:
[UNEXPECTED]Data dictionary corruption – missing parent
1416131 ORA$BASE APPS BPA_GUIDED_PICKING SYNONYM
1416121 ORA$BASE APPS CO_CLIPPERSHIP_INTERFACE SYNONYM
1416132 ORA$BASE APPS BPA_PRINT_GUIDED_PICK_LABELS SYNONYM
1416128 ORA$BASE APPS GEM_ESIG_INQUIRY_CORE SYNONYM
[UNEXPECTED]Data dictionary corruption detected. Provide details to
[UNEXPECTED]Oracle Support and ask for a bug to be opened against the
[UNEXPECTED]Online Patching component of Oracle Application Install.

[STATEMENT] Please run adopscanlog utility, using the command

“adopscanlog -latest=yes”

Issue:

The corruption is detected with the $AD_TOP/sql/ADZDDBCC.sql scriptis executed just prior to setting up the ADOP session.  This is also a mandatory check performed during pre-upgrade readiness checking for R12.2 upgrades.

Solution:

There is a rudimentary, but effective script supplied in $AD_TOP/patch/115/sql named adzddmpfix.sql (and a number of other adzd___ named scripts that address other data dictionary issues, such as the common TimeZone timestamp issues (Doc ID 2017686.1))

This script is run as SYS and requires all middle-tier services to be shutdown because it’s rebuilding all of the APPS synonyms for objects and recompiling afterwards.

sqlplus “/ as sysdba” @$AD_TOP/patch/115/sql/adzddmpfix.sql

REM $Header: adzddmpfix.sql 120.0.12020000.3 2015/09/14 10:10:32 sstomar noship$
REM dbdrv: none
REM +======================================================================+
REM | Copyright (c) 2005, 2015 Oracle and/or its affiliates. |
REM | All rights reserved. |
REM | Version 12.0.0 |
REM +======================================================================+
REM | FILENAME
REM | adzddmpfix.sql
REM |
REM | DESCRIPTION
REM | Warning: this script is an experimental workaround to the Oracle
REM | Database data Dictionary “missing parent” corruption described in
REM | Bug 20627866. This bug currently has no other known fix, but this
REM | script will repair the problem sufficiently to allow adop to continue
REM | executing.
REM |
REM | Warning: You must be connected as SYSDBA with application services
REM | shutdown to run this script
REM | Usage:
REM | sqlplus / as sysdba
REM | @adzddmpfix.sql
REM |
REM |
REM +=======================================================================+

Sample output:

SQL> @adzddmpfix.sql
“—- Fixing Data Dictionary Corruptions (missing parent) —-”

4 rows deleted.

Commit complete.

System altered.

“—- Compiling invalids —-”

Don’t forget to re-run the $AD_TOP/sql/ADZDDBCC.sql script to identify whether the data dictionary corruption is still present afterwards.