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ORA-27300: OS system dependent operation

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When I tried to create a  new database for RAC environment using DBCA, It shows the error about invalid grid and diskgroup not mounted.
Error Details are
ORA-27300: OS system dependent operation:invalid_egid failed with status: 1
ORA-27301: OS failure message: Operation not permitted
ORA-27302: failure occurred at: skgpwinit6
ORA-27303: additional information: startup egid = 501 (oinstall), current egid = 502 (dba)
There was a permission problem.
[oracle@node1 ~]$ ls -l /u01/app/11.2.0/grid/bin/oracle
-rwxrwxr-x oracle dba 210824714 July 30 09:00 /u01/app/11.2.0/grid/bin/oracle

Solution :
Stop the ASM instance and then execute following command
[oracle@node1 ~]$ chmod 6751 /u01/app/11.2.0/grid/bin/oracle
[oracle@node1 ~]$ ls -l /u01/app/11.2.0/grid/bin/oracle
-rwsr-s–x 1 oracle dba 210824714 July 30 09:02 /u01/app/11.2.0/grid/bin/oracle

 Change the permission on second node grid home oracle binary file .
Start the ASM instance and then tried to create database using DBCA. It was successful.

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