alter session set container=pdb1;
Session altered.
SQL> @apxpatch.sql
...
PL/SQL procedure successfully completed.
...Validating Application Express
...(12:25:48) Starting validate_apex for APEX_050100
...(12:25:51) Checking missing sys privileges
...(12:25:51) Recompiling
...(12:25:53) Checking for objects that are still invalid
...(12:25:53) Key object existence check
...(12:25:53) Setting DBMS Registry for APEX to valid
...(12:25:53) Exiting validate_apex
PL/SQL procedure successfully completed.
PL/SQL procedure successfully completed.
timing for: Complete Patch
Elapsed: 00:04:48.58
SQL> !ls apxldimg.sql
apxldimg.sql
SQL> @apxldimg.sql /home/oracle/Downloads/patch
PL/SQL procedure successfully completed.
PL/SQL procedure successfully completed.
1 row selected.
1 row selected.
1 row selected.
PL/SQL procedure successfully completed.
1 row selected.
PL/SQL procedure successfully completed.
. Loading images directory: /home/oracle/Downloads/patch/images
Directory created.
PL/SQL procedure successfully completed.
PL/SQL procedure successfully completed.
PL/SQL procedure successfully completed.
Commit complete.
Directory dropped.
timing for: Load Images
Elapsed: 00:05:12.92
SQL> select VERSION from dba_registry where comp_id='APEX';
VERSION
------------------------------
5.1.2.00.09
1 row selected.