Multiple Database Updates

Question

Hi
In development environment I have many branches(copies) of a database.
For every change (ddl, dml) i have to login every database manually to execute statements, Is there a client tool that support multiple database update or if any expert ever make a customized routine for that?
And ideally as i have different named branches i wish i can define the scope of change too i.e. change execute on databases of "abc" & "pqr" branches only.
Wishes

Answer 1

If I understand correctly what you want to do, is the purpose to do some task or run some script in multiple databases on the same server?
If so, this is done easily by listing the database (sids) in a file and reading the file in a loop statement.
In my case, I simply create a file on the server called localsids. I keep this in /var/opt/oracle directory.
Then, in my script, I set:
SIDFILE='/var/opt/oracle/localsids'
NEWPASS=`cat $HOME/.xlh/sys`
# This loop reads through the 'sidlist' and then looks for a password
# stored in a separate directory for each sid, but if individual
# directories do not exist, then it uses the standard system password.
# It then opens a sqlplus session for each sid (as it loops through the
# sidfile and executes some sql statement(s), or executes a sql script.
cat $SIDFILE | while read SID
do
ORACLE_SID=$SID
export ORACLE_SID
echo $SID # this is only for my own verbose purposes
sqlplus -s system/manager@$SID <<EOF > /tmp/chg_passwd_${SID}.sql
alter user system identified by $NEWPASS
alter user sys identified by $NEWPASS
EOF
done
exit
# In the above example, i am changing the sys and system passwords for all databases listed in the localsids file.
Hope this helps...
ji li
Message was edited by: ji li to simplify the example...
I have simplified the above example to hardcode the system password into this script, however, normally I would never do this in real practice. This is just as an example to simplify how to run a loop to run a common script or sql statement in each database.