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Oracle Listener gets killed when root session is closed

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Operating Systems AIX Oracle Listener gets killed when root session is closed
# 1  
Old 01-20-2014
Oracle Listener gets killed when root session is closed
Hi everyone,

This is a strange thing, sometimes when I type > exit from root session, i get a message
> There are processes running

after this message is displayed the oracle listener dies out and have to startup the listener again.

but this doesn't have always.

Where should I start to troubleshoot ?

thanks
# 2  
Old 01-20-2014
How are you starting the listener?
# 3  
Old 01-20-2014
This happens if you have started the Oracle listener in the current shell,
and the listener does not completely disconnect its streams (as a daemon process should do).
Work around: associate the process' stdin (0) stdout (1) stderr(2) with /dev/null
Code:
listener_command < /dev/null >/dev/null 2>&1 &

This User Gave Thanks to MadeInGermany For This Post:
rbatte1
# 4  
Old 01-20-2014
Quote:
Originally Posted by rbatte1
How are you starting the listener?
from oracle user
Code:
# su - oracle
# lsnrctl {start|stop} listener_name

Quote:
Originally Posted by MadeInGermany
This happens if you have started the Oracle listener in the current shell,
and the listener does not completely disconnect its streams (as a daemon process should do).
Work around: associate the process' stdin (0) stdout (1) stderr(2) with /dev/null
Code:
listener_command < /dev/null >/dev/null 2>&1 &

1. will this impact the production ?
2. should i run this as an oracle user or root user


thanks
# 5  
Old 01-20-2014
Quote:
Originally Posted by filosophizer
from oracle user
Code:
# su - oracle
# lsnrctl {start|stop} listener_name

1. will this impact the production ?
2. should i run this as an oracle user or root user


thanks
1. I guess the impact is the same, as when You log off and the listener dies?!

2. as oracle

However, when You use the redirect to /dev/null, You have to check the return code. In case of an error You will see no output from this command.
Maybe a "nohup" will be more helpfull: nohup listener_command & - the output will redirected to nohup.out

regards
# 6  
Old 01-20-2014
If configured correctly, the listener should come and remain up with lsnrctl start <listener_name>.
Inspect the listener log file for errors (use lsnrctl status <listener_name> to get the log location and filename).
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