script to start service automatically

[needee]

to start the Oracle DB and SAP(ERP), we did the following

su - orabit
bitesbitest:oracle> lsnrctl start
bitest:oracle> exit

and then

su - bitadm
bitest:bitadm> startsap

I always did the above manually, please share the code(script) that automatically does the above at each reboot.

Regards

[chill92]

Put your commands in a script and name it whatever you want, that sounds like what it does. copy it to /etc/init.d .

cd to a multiuser level directory, probably rc3.d so you kill it accidentally when/if shifting down a multi user mode.

Make the symbolic link pointer to there. Choose an appropriate run number sequence. Look at all of the S and K script numbers and make yours after any prerequisite that your oracle requires.

Be sure to make a proper K script pointer with the same number for shutdown.

example: ln -s Existing NON-existing

ln -s ../start_my_oracle S99start_my_oracle

[needee]

nice help thanks

[secondmouse]

Actually there are easier ways for this, what I usually do is, suppose I have a script ( it can also be a soft link to another script ) in /etc/init.d/myscript
all I need to do is:

chkconfig -a myscript
chkconfig myscript on

If I don't need that script to run on boot, I simply do a

chkconfig myscript off
chkconfig -d myscript

If you need advanced control over what other service(s) should run before myscript, add the following information between the #!/bin/bash line and your actually codes, in this example, myscript requires network and portmap to run before itself does.

### BEGIN INIT INFO
# Provides:       myscript
# Required-Start: $network $portmap
# Required-Stop:
# Default-Start:  3 5
# Default-Stop:
# Short-Description: whatever myscript does
# Description:    longer description
### END INIT INFO

A good place to learn more about this is to study scripts under /etc/init.d/

[needee]

Hi secondmouse, excellent help.

what's the difference b/w

Required-Start: $network $portmap
and
Required-Start: network portmap

that is whats difference b/w SERVICE and $SERVICE

[secondmouse]

Quoted from /etc/init.d/skeleton

When specifying hard dependencies or ordering requirements, you can
# use names of services (contents of their Provides: section)
# or pseudo names starting with a $.