Add a new Linux user to log on to sqlplus

After installing Oracle, you want to use other Linux users to log on to sqlplus,
$ Usermod-g oinstall zhou
$ Cp/home/oracle/. bash_profile/home/zhou/. bash_profile

Failed to find!
The following problems occur:
SQL * Plus: Release 9.2.0.1.0-Production on Friday July 27 02:19:10 2007
Copyright (c) 1982,200 2, Oracle Corporation. All rights reserved.
ERROR:
A ORA-01034: ORACLE not available
ORA-27121: unable to determine size of shared memory segment
Linux Error: 13: Permission denied

The above prompt shows that the operation is denied by the OS and shared memory segment cannot be accessed,

$ Cd $ ORACLE_HOME/bin/
$ Chmod + s oracle
This is not necessarily the best authorization method. You can grant the s permission to the group or other according to your environment.
So that other OS users can access the shared memory of oracle, and then let other OS users run sqlplus to log on to the database, this error will not be reported.

Non-oracle users cannot start ilasserver.
The reason is that other users have insufficient permissions to access files in the ilasserver directory;
Chmod-R 777 ilasserver is enough;