sqlplus/rman登录报权限错误ORA-01031/ORA-04005/0RA-00554

安装Weblogic误操作对Oracle用户属组进行了修改

--本地sqlplus登录报错权限问题？？？

[oracle@enmo admin]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Sat May 5 01:28:39 2018

Copyright (c) 1982, 2013, Oracle. All rights reserved.

ERROR:
ORA-01031: insufficient privileges

--本地RMAN 登录还是报权限问题

[oracle@enmo admin]$ rman target /

Recovery Manager: Release 11.2.0.4.0 - Production on Sat May 5 01:10:30 2018

Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.

RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00554: initialization of internal recovery manager package failed
RMAN-04005: error from target database:
ORA-01031: insufficient privileges

--故障缘由推断： Oracle无法登录  使用软件，本地登录排除口令文件文件，是否是操作系统环境变量、权限问题，环境变量有问题，报错不同，此现象是无法运行Oracle的程序软件SQLPLUS/ RMAN ，因此查询操作系统用户
[oracle@enmo admin]$ id oracle
uid=502(oracle) gid=500(oinstall) groups=500(oinstall),1100(weblogic)

--发现Oracle属主存在异常

[root@enmo ~]# gpasswd -d oracle weblogic
Removing user oracle from group weblogic
[root@enmo ~]# id oracle
uid=502(oracle) gid=500(oinstall) groups=500(oinstall)
[root@enmo ~]# usermod -d /home/oracle/ -G dba oracle
[root@enmo ~]# id oracle
uid=502(oracle) gid=500(oinstall) groups=500(oinstall),502(dba)