Disabling system triggers.
Before performing the next step, you must first set _SYSTEM_TRIG_ENABLED = FALSE in the initialization parameter file. To do this add the following line to your init<sid>.ora file and restart the database (see Note  149948 . 1  in Metalink for more information on this issue). 
_system_trig_enabled=false


Invoke SQL*Plus (sqlplus), connect as internal and run the following:
select * from duc$ where PACK='JIS$INTERCEPTOR$' ; 
If no rows were returned go to the next step. If a row was returned delete it using the following:
delete from duc$ where PACK='JIS$INTERCEPTOR$' ;
commit; 


Invoke SQL*Plus (sqlplus), connect as internal and run the following SQL scripts with event  10520  set. NOTE: This event is not intended for regular database operation and when turned on below by the 'ALTER SESSION' command will automatically be turned off by the subsequent 'CONNECT' command.

ALTER SESSION SET EVENTS '10520 TRACE NAME CONTEXT FOREVER, LEVEL 10';
?/rdbms/admin/catalog.sql
?/rdbms/admin/catproc.sql
?/rdbms/admin/catrep.sql (This only needs to be run if you are using symmetric/advanced replication. This is not necessary for sites using dblinks and read-only snapshots if symmetric/advanced replication is not installed) 
CONNECT / AS SYSDBA; 
update obj$ set status= 5  where type#= 29  and owner#!= 0 ;
commit

SQL*Plus: Release  8 . 1 . 7 . 0 . 0  - Production on Mon Jun  9   15 : 02 : 02   2003 
(c) Copyright  2000  Oracle Corporation.  All rights reserved.
Connected to:
Oracle8i Enterprise Edition Release  8 . 1 . 7 . 4 . 1  - Production
With the Partitioning option
JServer Release  8 . 1 . 7 . 4 . 1  - Production
SQL> select * from v$version;
BANNER
 ----------------------------------------------------------------
 
Oracle8i Enterprise Edition Release  8 . 1 . 7 . 4 . 1  - Production
PL/SQL Release  8 . 1 . 7 . 4 . 0  - Production
CORE     8 . 1 . 7 . 2 . 1        Production
TNS for  32 -bit Windows: Version  8 . 1 . 7 . 4 . 0  - Production
NLSRTL Version  3 . 4 . 1 . 0 . 0  - Production