topic Running process in background in Operating System - Linux

Running process in background

Ragni Singh — Wed, 24 Oct 2007 08:50:42 GMT

I want to run a clone of a database in the background .. how do I submit stuff to run in background in oracle ? also I want to log the activity ? thanks

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Re: Running process in background

Peter Nikitka — Wed, 24 Oct 2007 12:18:59 GMT

Hi,

- put all required commands in shell script e.g. 'do_it'
- first line should be something like
#!/bin/bash
- chmod +x do_it
- ./do_it &

mfG Peter

Re: Running process in background

Ross Minkov — Wed, 24 Oct 2007 20:01:43 GMT

You can also add "nohup" in front of it, especially if it takes longer; this way if you get disconnected it will continue running (hangup signals are ignored). You can even log out and it will continue running. If you have any output it will go to nohup.out file.

Regards,
Ross

Re: Running process in background

Wilfred Chau_1 — Wed, 14 Nov 2007 16:11:20 GMT

or after you have executed the script,

press
and then type bg, to put the job in the background.

Re: Running process in background

Justin_99 — Wed, 14 Nov 2007 17:09:04 GMT

I am a big fan of the screen command.

Just type screen, in the new "screen" run your command then hit ctrl-a d to detach and go back to your original session. This screen will remain there with whatever command you ran. Just run screen -r to reattach to the screen.
I do this when I have large filesystems to fsck and I know it will be after hours when they finish. This way I can log out, take my laptop home and check later.

Re: Running process in background

Ivan Ferreira — Wed, 14 Nov 2007 19:02:00 GMT

To send a command into background just add & to the end of the command. To log the activity you need to redirect the "stdout" and "stderr" file descriptors. You have to use a command like this:

command > /tmp/command.log 2>&1 &

That will log activity to /tmp/command.log and send the command to background.

Re: Running process in background

Kapil Jha — Thu, 15 Nov 2007 23:56:08 GMT

I think what u want is to run a oracle command in backgroung in shell...
if no then above replies would do...
if yes then use,
export ORACLE_SID=XXXX
sqlplus username/passwd@oracle query

Hope this help
BR,
Kapil

Re: Running process in background

Abhirama.M.V — Sun, 18 Nov 2007 23:47:55 GMT

hi,
by giving '&' symbol u can run it in background. first check out weather that file has 'x' i.e. execution permission or not. if permission is not their give it.