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application is seeing times outs due to ORA-04021

we are seeing ORA-04021 and some objects in my schema A object is being locked by other schema Bwhich doesnt have any privs on A. how could be that possible.
where a user doesnt have privs to read/write/update the object in schema can lock that schema??
1 Solution
If B calls a procedure or function owned by A or other schema that has privileges to modify/lock A's objects then B can lock A through those.
slightwv (䄆 Netminder) Commented:
Is it possible that B has a privileged role like say, DBA, that might allow access?
ajaybeldeAuthor Commented:

how can i check if B is trying to access A by any Proc or function
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