RE: multi-home servers

Afternoon Niall,

>> those of you out there running multiple oracle homes, 
Yes, 10.5, 11.1 and 11.2

>> potentially with multiple oracle software owners and 
No, just the "oracle" user.

>> certainly with multiple listeners on Linux. How do you 
Yes, one application = one listener.

>> control db and listener startup at boot time? dbstart seems 
>> entirely inadequate.  
OS = Linux = SLES 11 [SP 1 I think]

1. We installed the orarun package. That gives us, amongst other things,
/etc/sysconfig/oracle & /etc/init.d/oracle (aka /etc/sbin/rcoracle).

2. I wrote a bash script (spookily named "listeners" - happy to share)
to control the listeners because setting the parameter in
/etc/sysconfig/oracle ONLY starts the default listener named LISTENER -
which we don't use.

The script does various things:

* Sources the /etc/sysconfig/oracle config file and check if the
databases are to be started (and by inference, stopped) automatically.
If so, continue, else bale out.

* Scans /etc/oratab looking for Oracle Homes.

* De-duplicates the list.

* For each discovered Oracle Home, look in network/admin for a file
named listener.ora.

* For each "sid_list_" found, extract the listener name.

* Sets the correct Oracle Home and start/stop the listener.

We decided to do it this way rather than messing with dbstart/dbshut
etc, as every time we get a new release of Oracle, there's a possibility
of our changes being forgotten, overwritten etc.

The script, listeners, is installed to run at run level 3 and 5 - same
as the oracle script. It also has a symlink to /etc/sbin/rclisteners so
that it can be manually called (by root) with start or stop parameters.


Cheers,
Norm.

Norman Dunbar
Contract Senior Oracle DBA
Capgemini Database Team (EA)
Internal : 7 28 2051
External : 0113 231 2051





Norman Dunbar
Contract Senior Oracle DBA
Capgemini Database Team (EA)
Internal : 7 28 2051
External : 0113 231 2051 



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