Non Rac Database is not startingup

Hi Expert,

I tried to install Oracle exadata cell store on vmware linux 6.

Non Rac was already on this server. After installing RPM cell-12.1.1.1.0_LINUX.X64.

I uninstall the RPM packages. When i try to start the Existing single non rac database. It is not coming up.

I am getting the below error.

SQL> startup mount;

ORACLE instance started.

Total System Global Area  363302912 bytes

Fixed Size     2253224 bytes

Variable Size   306187864 bytes

Database Buffers    50331648 bytes

Redo Buffers     4530176 bytes

ORA-03113: end-of-file on communication channel

Process ID: 2756

Session ID: 5 Serial number: 1

Alert log

ALTER DATABASE   MOUNT

2018-03-29 22:36:51.994000 +04:00

Errors in file /u01/app/OAM/diag/rdbms/orcl/orcl/trace/orcl_dskm_2733.trc: