Apply patch 7461070 came across ORA-04065 error

@/data/test_apps/apps/apps_st/appl/ad/12

Hi,

I apply patch 7461070 for upgrading 11.5.10 to 12.1.1, I came across the following errors during patching process.

sqlplus -s APPS/***** @/data/test_apps/apps/apps_st/appl/ad/12.0.0/patch/115/sql/adgrnctx.sql &systempwd &un_fnd CTXSYS &un_icx ICX
Connected.

User altered.

declare
*
ERROR at line 1:
ORA-04068: existing state of packages has been discarded
ORA-04065: not executed, altered or dropped stored procedure "PUBLIC.DBMS_SQL"
ORA-06508: PL/SQL: could not find program unit being called: "PUBLIC.DBMS_SQL"
ORA-04065: not executed, altered or dropped stored procedure "PUBLIC.DBMS_SQL"
ORA-06508: PL/SQL: could not find program unit being called: "PUBLIC.DBMS_SQL"