Help Needed: How to setup external procedure in listener on 11gR2

I have successfully installed 11gR2 RAC on two nodes RHEL5.3, I noticed that the default configuration has something different from previous versions (such as 10gR2 or 11gR1):
(1) listener.ora is under $GRID_HOME/network/admin (a.k.a under Grid tree) not under $ORACLE_HOME/network/admin, and have a new file called "endpoints_listener.ora"
listener.ora under $GRID_HOME/network/admin:
LISTENER=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER)))) # line added by Agent
LISTENER_SCAN1=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_SCAN1)))) # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER_SCAN1=ON # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER=ON # line added by Agent
endpoints_listener.ora under $GRID_HOME/network/admin:
LISTENER_NODE41=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=node41-vip)(PORT=1521))(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.10.41)(PORT=1521)(IP=FIRST)))) # line added by Agent
(2) If I put listener.ora under $ORACLE_HOME/network/admin like 10gR2 including EXTPROC, then restart RHEL servers, the listener.ora under $ORACLE_HOME/network/admin doesn't take effect rather the listener.ora under $GRID_HOME does; however if I run "lsnrctl stop" and "lsnrctl start" the listener.ora under $ORACLE_HOME/network/admin will take effect.
listener.ora I added later under $ORACLE_HOME/network/admin:
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(ADDRESS = (PROTOCOL = TCP)(HOST = node41-vip)(PORT = 1521)
(IP = FIRST))
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.10.41)(PORT = 1521)(IP = FIRST)
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1)
(PROGRAM = extproc)
Questions:
<1> How to correctly setup extproc correctly under 11gR2?
<2> Will my way in (2) will affect the SCAN single IP access functionality? (I assume SCAN is enabled at least partially by listener.ora under $GRID_HOME such that client can use simpler connection string)
Thanks in advance.
Edited by: user5852271 on Nov 18, 2009 9:04 PM

user5852271 wrote:
I think the document you mentioned is for 11gR1 not for 11gR2. If that is the case, you could go to the 11gR2 library and check the Networking docs yourself at http://www.oracle.com/pls/db112/portal.portal_db?selected=4&frame=#network_management
>
I felt that the 11gR1 should be named 10gR3, and 11gR2 should be 11gR1 because 11gR2 introduced a lot more new features.Good one. You should join Oracle Marketing.

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