How to fix Error: Execution failed due to Oracle error 4068?

I get following error when i try to run PL/SQL procedure from my browser. I am using OAS 4.0.8.2 and oracle 7.2 on solaris.

Error occured while accessing

        "/spewdemo/demo/alldocs"
at Tue Aug 07 14:45:24 2001

OWS-05101: Execution failed due to Oracle error 4068
ORA-04068: existing state of packages has been discarded
ORA-04063: package body "OAS_PUBLIC.OWA" has errors
ORA-06508: PL/SQL: could not find program unit being called
ORA-06512: at line 3

  PL/SQL Cartridge SERVICE: spewdemo/demo   PROCEDURE: alldocs

Any suggestions? Received on Tue Aug 07 2001 - 21:06:20 CEST