Slow Query on Virtual Tables

Question

Hello!
I am using a proprietary IDE environment to compile some applications. I cannot change the following SQL query it performs. During "Compile", the IDE is checking the DB Function calls in the app by executing the following
SQL Statement:
select c.owner, c.synonym_name, INSTR(a.object_type, 'PROC'), '1' from sys.dba_objects a, sys.dba_synonyms c where c.table_owner = a.owner and c.table_name = a.object_name and a.object_type IN ('FUNCTION','PROCEDURE') and a.status = 'VALID' and c.owner like'USERNAME'escape'\'
*of course, I put in USERNAME where an actual UserName/Owner name was.
This is the query that happens for every DB Procedure step in the application. The app isn't holding the list in memory and using it over again (that would help performance, but is probably impossible to have the IDE updated in a reasonable timeframe).
There are 50,000 objects and 10,000 synonyms on this database server. This query takes 20 seconds to complete. When I remove the last WHERE condition - c.owner like'USERNAME'escape'\' - the query takes 3 seconds.
Is there a way I can speed up this query? If I use a login with some restriced permissions, will it limit what I see in the SYN$ table?
Is there a better way to state this query? I can make a recommendation to the IDE company (but I probably won't get a patch for months).
Thanks for your help,
Eric

Answer 1

Could you try the following?
select /*+ full ( a ) full ( c ) */
c.owner, c.synonym_name, INSTR(a.object_type, 'PROC'), '1'
from sys.dba_objects a
,sys.dba_synonyms c
where c.table_owner = a.owner
and c.table_name = a.object_name
and a.object_type IN ('FUNCTION','PROCEDURE')
and a.status = 'VALID'
and c.owner like 'X_OWNER' escape'\'