ORA-29701: Unable to connect to Cluster Manager

Problem while starting oracle ASM
% ORACLE_SID=+ASM; export ORACLE_SID
% sqlplus /nolog

SQL*Plus: Release 11.1.0.6.0 - Production on Thu Apr 15 07:25:47 2010

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SQL> conn / as sysdba
Connected to an idle instance.
SQL> startup
ORA-29701: unable to connect to Cluster Manager
My problem is solved executing followings from root.
% $ORACLE_HOME/bin/localconfig delete
% $ORACLE_HOME/bin/localconfig add