UNIX for Advanced & Expert Users

Who can tell me how I can see to it that a application doesn't try to start it's processes untill Oracle has completely started.

Thanx.

The exact answer depends on which OS you are running. But these days most unix variants have a series of little start up scripts that are run in order according to the name of the script. If you look at your start up scripts, it should be fairly obvious.

Thank you for your reply, but the boot sequence is OK. It just doesn't seem to wait for one (Oracle) to completely start up, before it tries to start up the next one.[

QUOTE]Originally posted by Perderabo
The exact answer depends on which OS you are running. But these days most unix variants have a series of little start up scripts that are run in order according to the name of the script. If you look at your start up scripts, it should be fairly obvious. [/QUOTE]

First, post what OS and version.

Second, post how you are starting these two processes - include, if applicable, the lines from the script(s). Post if the processes are started from the same script, or two different ones.

As a suggestion (since the information isn't yet known), you could look for the first process id from the script running the second process (modify your script to write it to a file, or create a temp file that the second script waits to be delete before starting to run) and use either the sleep command or wait command while waiting for the first to finish.

Example:
First script starts first Oracle process: change it to create a temp file
touch /tmp/Oracle1.tmp
At the end of the script, remove the temp file.

Second script starts second Oracle process:
Checks to see if the file exists - if it does, sleep for xx amount of time and then check again. Once the file is removed, the second script will start the second process.

If your OS, as Perderabo has mentioned, uses different scripts in startup, then it's also just as easy to find how much time you need to wait and just put the second script in a 'later' start by changing the number of the script (S99 versus S01).