Apps DBA Workshop

Hi, Recently we upgraded our database from 10.2.0.4 to 11.1.07, after some time we encountered error ORA-07445 in our alert log. At the same time we were getting errors at OS level as : Feb 9 11:41:38 mydomain.com genunix: [ID 533030 kern.notice] NOTICE: oracle[27393] attempt to execute code on stack by uid 1001 Feb 9 11:47:41 mydomain.com genunix: [ID 533030 kern.notice] NOTICE: oracle[27899] attempt to execute code on stack by uid 1001 Feb 9 11:53:46 mydomain.com genunix: [ID 533030 kern.notice] NOTICE: oracle[28755] attempt to execute code on stack by uid 1001 Feb 9 12:01:18 mydomain.com genunix: [ID 533030 kern.notice] NOTICE: oracle[29307] attempt to execute code on stack by uid 1001 Feb 9 12:07:21 mydomain.com genunix: [ID 533030 kern.notice] NOTICE: oracle[29889] attempt to execute code on stack by uid 1001 Feb 9 12:13:44 mydomain.com genunix: [ID 533030 kern.notice] NOTICE: oracle[439] attempt to execute code on stack by uid 1001 Feb 9 13:27:51 mydomain.com genunix: [ID