Thank you Marco.
For example an error is as follows:
Compile Errors in the PACKAGE object TRON2000.GC_K_CBOS_LILEN_MAPFRENET_MAR.
Error: PLS-05018: The GC_K_CBOS_LILEN_MAPFRENET_MAR unit has omitted the optional AUTHID clause; The default value DEFINER has been used
Line: 1
Text: CREATE OR...
We recently migrated the Oracle database from 9i to 11g. I am presented with the situation that when compiling a package with version 12.01.1814 it is invalid but if I compile it with version 11.01.1765 it is compiled. for what is this? Thank you