PL/SQL re-installation

[pando]

you said

What happen before i deleted all the objects is that i tried to add some of code to DBMS_STANDARD package which are implemented in JAVA.

Are you saying you modified dbms_standard.... a system package?!

[tabreaz]

Yes i modified that package; and rerun the package but i got few errors at that time i scared becoz most of the objects become invalid after execution of that package;

At that time i thought to reinstall PL/SQL by deleting the Objects which was a big mistake