Unable to update a domain after upgrading database to Oracle 11.2.0.4.0 - receive ORA-00604, ORA-06550, ORA-00306 errors

Code:

connect / as sysdba

alter session set current_schema=CTXSYS; 

create or replace procedure syncrn (
  ownid IN binary_integer,
  oname IN varchar2,
  idxid IN binary_integer,
  ixpid IN binary_integer,
  rtabnm IN varchar2,
  srcflg IN binary_integer,
  smallr IN binary_integer
)
  authid definer
  as external
  name "comt_cb"
  library dr$lib
  with context
  parameters(
    context,
    ownid  ub4,
    oname  OCISTRING,
    idxid  ub4,
    ixpid  ub4,
    rtabnm OCISTRING,
    srcflg ub1,
    smallr ub1
);
/

Note:
Patch notes:

The patch for this issue supplies corrected upgrade and downgrade scripts
such that any new upgrade / downgrade should get the correct definition.

If the upgrade has already been done WITHOUT the patch already in place, the following command must be executed to correct the dictionary.

"@?/sqlpatch/17501296/postinstall.sql" from <Patch17501296>