Not able to start the DG listener.

While starting the DG listener , getting below error.

-bash-3.2$ lsnrctl start LISTENER_DG_TEST

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on xxxxxxxxxx 03:46:21

Copyright (c) 1991, 2009, Oracle. All rights reserved.

Starting /oracle/product/11.2.0.3/TEST/bin/tnslsnr: please wait...

TNS-12537: TNS:connection closed
TNS-12560: TNS:protocol adapter error
TNS-00507: Connection closed
Linux Error: 29: Illegal seek
-bash-3.2$ 

SOlution:  Copied the lsnrctl & tnslsnr binaries from good server to bad server. and  It started working.

R12.1.1 Maintenance Pack(7303030) failing EGOEXTDROP.sql ORA-20001: Drop Index: ORA-00955: Name Is Already Us

Recently our environment , we were facing the below error while applying the R12.1.1 Maintenance Pack(7303030).

EGOEXTDROP.sql ORA-20001: Drop Index: ORA-00955: Name Is Already Us

There is a DOC ID1370221.1 saying to rename the EGO_MSIB_EXT_B and EGO_MSIB_EXT_TL tables to backup, new names then rerun the script or Raise the SR.

Rasied the SR: 3-8458158891,performed the below Action plan provided by Oracle Developement.

drop public synonym EGO_MSIB_EXT_B;
drop public synonym EGO_MSIB_EXT_TL;
drop table ego.ego_msib_ext_b;
drop table ego.ego_msib_ext_tl;

and finally patch started running..