Script to find if list of Apps patches exists in DB 'A' but not in DB 'B'

Question

Hi All,
DB:11.1.0.7
Oracle Apps:12.1.1
OS:Linux 86x64 bits Red Hat
Could anyone please share the script to find if list of patches exists in DB 'A' but not in DB 'B'
Thanks for your time
Regards,

Answer 1

We have already answered you, not sure why you keep asking the same question!
SELECT bug_number,creation_date from ad_bugs where bug_number in
('1234','5678','56783','4321','765432');
I get the list of patches out of the above say - '1234','5678'
Now how to get the list of patches out of the above list of 5 patches which are not in the DB 'A' .I know this could be done manually but this is just an example as there may be hundreds of patches like this in ad_bugs to extract and we cannot manually do it in excel or any other way bit through a queryRun the same query in Database B and compare it with the output of Database A. Or, simply create a database link for Database B from Database A and run this query from DB A:
SQL> SELECT bug_number, creation_date
from ad_bugs
where bug_number in ('1234','5678','56783','4321','765432')
minus
SELECT bug_number, creation_date
from ad_bugs@<DBlink to DB B>
where bug_number in ('1234','5678','56783','4321','765432');Thanks,
Hussein