Youre here because you want to resolve the ORA 0. And below you will find one solution to that problem, so lets dive straight in. The Most Likely CauseThe ORA 0. Personally, I came across this error whilst trying to recompile a PLSQL package in the database. It took its time to get to this error message I dont know what the timeout setting is but it sat there hanging at the SQL plus prompt for about 5 minutes, which I believe is the timeout value. You can see other people who have been getting the same issue, here. What does the ORA 0. Error Message Mean Oracle uses a piece of memory which is shareable among all the database users called the Library Cache to maintain information about objects such as plsql packages, views, tables, etc. The objects cannot be changed while they are in use, and therefore a lock must be taken out on an object in order to modify it a library cache lock. A session will wait on the library cache pin or library cache lock if the object is already in use until a timeout occurs usually 5 minutes with an ORA 0. How to Resolve the ORA 0. Error What you do will depend on your environment but there are certain actions you should take to identify who is holding the lock then you will have enough information to make an informed decision as to what to do about the lock. You may wait until the other process has finished using the object or perhaps you can kill the session, it all depends on your environment. B28359_01/server.111/b28286/img/lock_table.gif' alt='Oracle Select For Update Lock Timeout' title='Oracle Select For Update Lock Timeout' />Written by Jerry Mattsson This document was written some time ago but have not been published anywhere, so if anyone can use it, that is fine. I revised it and put. Selects data from a table or multiple tables. GROUP BY groups the the result by the given expressions. HAVING filter rows after grouping. ORDER BY sorts the result. SaddamMeshaal it means that Oracle thinks that the resource you are trying to replace is in use. Oracle Training from Don Burleson The best on site Oracle training classes are just a phone call away You can get personalized Oracle training by Donald. RELEASE/en/_images/Dead-Lock-Record.png' alt='Oracle Select For Update Lock Timeout' title='Oracle Select For Update Lock Timeout' />Below I would like to show you how you can identify which users are causing the ORA 0. VACCESS You can use the VACCESS view to see which users have locks on which objects in your database SELECT SID, OWNER, OBJECT, TYPE. FROM VACCESS. WHERE OBJECT objectname SESSIONEVENT and VSESSIONWAIT use these views to see what Oracle wait events the sessions are waiting on SELECT. FROM VSESSIONEVENT. WHERE SID lt sid. This document contains system and platformspecific information for Oracle Fusion Middleware products. This document is intended for use in conjunction with the. ORDER BY TIMEWAITED DESC. Free Download Crack For Geforce Gt. FROM VSESSIONWAIT. WHERE SID lt sid VLOCKEDOBJECT This view will also help you see who is locking the object. I have written another article about the vlockedobject view which you should check out quickly then come back to this page. It might also be worth have a read of another article I wrote on blocking sessions in the Oracle database, which should give you some additional knowledge. Check the package code for references to DB links which arent working correctly. Note here that the code may reference synonyms that point across DB links and not the DB link name directly so watch out for those. Speak with the developers and find out if they are compiling code. This could be the cause of the problem. DBADDLLOCKS use this view to see what DDL locks are on objects with the schema or against the object you are interested in SELECT FROM DBADDLLOCKS. WHERE OWNER lt schema. Just quick before you goHopefully that helped you out and resolved your Oracle error. While youre here, what steps are you taking to improve your Oracle knowledge Check out my latest post about which Oracle books are a must read for any serious Oracle DBA. Learn from the bestLike it, share it.