second instance doesn't start PRCCR-1013 PRCCR-1064 CRS-5017 ORA-01034 ORA-27101

I got error when I try to start second instance to my RAC  system. I use ODA 12.1.2.6 , Oracle Database Grid Infrustructure 12.1.2 and database 12c .. That is standby machine. I configured from Single İnstance to RAC. Then I can't open second node.

ERROR CODES: PRCCR-1013 PRCCR-1064 CRS-5017 ORA-01034 ORA-27101

[oracle@orcl1 trace]$ srvctl status database -d orclst
Instance orclst1 is not running on node orcl1
Instance orclst2 is running on node orcl0
[oracle@orcl1 trace]$ srvctl start instance -d orclst -i orclst1
PRCR-1013 : Failed to start resource ora.orclst.db
PRCR-1064 : Failed to start resource ora.orclst.db on node orcl1
CRS-5017: The resource action "ora.orclst.db start" encountered the following error:
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3640
Additional information: 1037845611
Process ID: 0
Session ID: 0 Serial number: 0
. For details refer to "(:CLSN00107:)" in "/u01/app/grid/diag/crs/orcl1/crs/trace/crsd_oraagent_oracle.trc".
CRS-2674: Start of 'ora.orclst.db' on 'orcl1' failed