Changes are coming to apex.oracle.com - it's going to be consolidated onto other hardware and also Oracle Database Vault will be installed and implemented. Part of the process of installing Oracle Database Vault includes running the script $ORACLE_HOME/rdbms/admin/utlrp.sql. This script will attempt to recompile all invalid objects in the database.
As of today, 08-MAR-2013, there are 62,197 invalid database objects across all of the workspaces on apex.oracle.com - not that bad, considering there are 17,447 APEX workspaces and 17,984 workspace schemas. However, it takes a long time to attempt to recompile 62,197 invalid database objects. And this will only serve to dramatically increase the outage time for this instance.
- A listing of all invalid database objects in the workspace schemas was computed today, 08-MAR-2013.
- A second listing of all invalid database objects in the workspace schemas will be computed again on 13-MAR-2013.
- All invalid objects contained in both reports will be immediately dropped with no chance of recovery (as the Recycle Bin will be purged).
Update March 12, 2013: This drop and purge will no longer occur on 13-MAR-2013, nor at any time in the future. We were able to make significant progress in the reduction in the number of invalid objects (reduced by 85%). Thus, we're going to live with the additional outage time cause by this recompilation instead of dropping objects in workspace schemas.