schema duplicate

Sever A has database X with schemas A,B,C............
Server B has database Y with schemas A,B,D etc

How will you find out the schema that is not B is having ...other than A


A kind of subtract..Minus
tonydbaAsked:
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johnsoneConnect With a Mentor Senior Oracle DBACommented:
I am assuming that you don't have a database link set up between the 2 databases that connects as a privileged account.  If you do, you shouldn't.

What I would do is get a list of schemas from database X:

Connect with SQL*Plus as a privileged user and run:
spool db_x_schemas.txt
select distinct owner from dba_objects order by 1;
spool off

Then on database Y:

Connect with SQL*Plus as a privileged user and run:
spool db_y_schemas.txt
select distinct owner from dba_objects order by 1;
spool off

Now you have 2 files:  db_x_schemas.txt and db_y_schemas.txt.  Get those 2 files on the same server (using scp or ftp) and then do:

diff db_x_schemas.txt db_y_schemas.txt

You most likely see differences due to prompts and you can ignore those.
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Devinder Singh VirdiLead Oracle DBA TeamCommented:
Another method with DB link is
Create database link to_another connect to system identified by password using 'CONNTING_STRING';

select username from A, b@to_another
where a.username = b.username(+)
and b.username is null;

OR

you can use full outer join to see which schemas are mismatching

Then drop DB link.
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Geert GOracle dbaCommented:
use toad compare
http://software.dell.com/products/toad-development-suite-for-oracle/

it can generate a script for all the differences
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Steve WalesSenior Database AdministratorCommented:
This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.
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