R12.1.3 : while applying the Arabic patch 6678700_AR the "DROP TABLE AD_DEFERRED_JOBS PURGE" take al

Hi,

while applying the Arabic patch 6678700_AR the "DROP TABLE AD_DEFERRED_JOBS PURGE" take along time

Problem Description
---------------------------------------------------
while applying the Arabic patch 6678700_AR the "DROP TABLE AD_DEFERRED_JOBS PURGE" take along time
about 12 hours

from the log file
>>>

All workers have quit.


Dropping FND_INSTALL_PROCESSES table...

Connecting to APPLSYS......Connected successfully.

DROP TABLE fnd_install_processes PURGE

DELETE FROM ad_timestamps WHERE TYPE = 'FND_INSTALL_PROCESSES'


FND_INSTALL_PROCESSES table dropped.


Dropping AD_DEFERRED_JOBS table...

DROP TABLE AD_DEFERRED_JOBS PURGE
~


we are on  R12.AD.B.1
and file  $AD_TOP/src/jobs/aijmtab.lc is not found in the path