[CentOS] best practises for avoiding to write passwords in shell scripts (example sqlplus from Oracle)

nate centos at linuxpowered.net
Tue Dec 1 23:03:01 UTC 2009

Sven Aluoor wrote:
> Hi folks
> I have here a CentOS box where i need to setup cronjob (with session
> to remote Oracle instance). On the remote DB i have no access, expect
> limited user.

With sqlplus and oracle I pretty much always ran scripts
as sysdba

from one of my scripts that fires up Oracle ASM:
# Set variables for ASM sid (first)
su $ORACLE_USERNAME -c "echo "startup" | sqlplus / as sysdba" | tee

another example -
        su $ORACLE_USERNAME -c "sqlplus / as sysdba 
| tee -a $FINAL_SQL_LOG

If I needed to login as a specific user to oracle I would login
as sysdba and run

alter session set current_schema=OTHER_USER_NAME;

to change the user name after login.

So no passwords needed.

For servers, everything automated relies on ssh key based auth.

I'm no Oracle expert by any means!


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