Problem with Oracle RAC with DRCP and persistent connections

Hello,
I am having a problem that has me stumped. I cannot get SCAN, and DRCP to work together nicely.
Right now, I can connect through my scan hostname fine without connection pooling, once I enable it I start having connection time outs. I found if I specified outbound_connection_timeout in sqlnet.ora that it times the connection out to the time I set in there. If I don't set this option I get a "ORA-12170: TNS:Connect timeout occurred".
The odd thing is I can leave connection pooling on and connect to one of my rac instances individually and it doesn't experience this problem. The only time it pops up is if I combine multiple rac instances (Through the use of SCAN or tnsnames.ora) and I enable connection pooling.
I don't know which direction to go to even diagnose this, so any and all help is appreciated.
Thank you.
Edited by: Rarp on Oct 1, 2011 10:47 PM

Hi,
You need to detail the problem. Enable TRACE SQL*NET on the server and client using note below.
How to Enable Oracle SQLNet Client , Server , Listener , Kerberos and External procedure Tracing from Net Manager [ID 395525.1]
Also you can try check this note:
11g: ORA-12170 With Combination RAC, DRCP and a Firewall [ID 953277.1]
Hope this helps,
Levi Pereira

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Copyright (c) 1982, 2009, Oracle. All rights reserved.
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ora.DATA.dg    ora....up.type ONLINE    ONLINE    sil-rac1
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ora....N2.lsnr ora....er.type ONLINE    ONLINE    sil-rac1
ora....N3.lsnr ora....er.type ONLINE    ONLINE    sil-rac1
ora.asm        ora.asm.type   ONLINE    ONLINE    sil-rac1
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ora.scan2.vip ora....ip.type ONLINE    ONLINE    sil-rac1
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ora....C1.lsnr application    ONLINE    ONLINE    sil-rac1
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Thanks for your answer
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MAIL=/var/spool/mail/oracle
ORACLE_BASE=/u01/app/oracle
ORACLE_HOME=/u01/app/11.2.0/grid
ORACLE_HOSTNAME=sil-rac1.silanis.com
ORACLE_SID=+ASM1
ORACLE_TERM=xterm
ORACLE_UNQNAME=RAC
PATH=/u01/app/11.2.0/grid/bin:/usr/sbin:/usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin:/home/oracle/bin
PWD=/home/oracle
SHELL=/bin/bash
SHLVL=1
SSH_ASKPASS=/usr/libexec/openssh/gnome-ssh-askpass
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TMPDIR=/tmp
TMP=/tmp
USER=oracle
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(SERVICE_NAME = rac)
********************************************************

It is my fault.
It was the connection service. I had one one with preferred option and one without it. Now is working well.

Problem with Oracle RAC with DRCP and persistent connections

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