-bash-3.1# sqlplus
SQL*Plus: Release 10.2.0.1.0 - Production on Mon Mar 30 08:10:50 2009
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Enter user-name: system/bassam.
ERROR:
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory
Enter user-name: /
ERROR:
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory
Enter user-name: / as sysdba
ERROR:
ORA-01031: insufficient privileges
SP2-0157: unable to CONNECT to ORACLE after 3 attempts, exiting SQL*Plus
*-bash-3.1# su - oracle*
*id: cannot find name for user ID 1011*
*-bash-3.1$*
How can I resolve that issue? previously everything was running ok but when I restarted the system then it started the problem
ORACLE XE
OS=centOS
Thanks & best regards