This error related to ASM instance, Usually it’s happened when you are trying to create dbconsole the solution is simple and not that complicated just follow the below instruction.
Choose one of Rac ( Real Application Cluster ) and fire the below command under grid user :
orapwd file=/u01/app/11.2.0/grid/dbs/orapw+ASM password=
Now Move the (orapw+ASM) to other nodes using scp and any FTP software as you like. to know about scp here. check the below example :
scp orapw+ASM :/u01/app/11.2.0/grid/dbs/
Back to Oracle User :
export ORACLE_SID=+ASM1
export ORACLE_HOME=/u01/app/11.2.0/grid
$ sqlplus / as sysasm
SQL>create user asmsnmp identified by ;
SQL> grant sysdba to asmsnmp;
Thank you
Osama Mustafa
Technology Geek 