ORA-29701: Unable to connect to Cluster Manager

Last week we restarted our production server, after that we were unable to start the ASM instance. When we tried to start the ASM instance we got the following error,

ORA-29701: Unable to connect to Cluster Manager.

The reason is Oracle cssd daemon process was not running.

Workaround:
Login to the server as root user

Step 1: Go to the /etc folder
Step 2: Execute the following command.
# init.cssd start
startup will be queued to init within 30 seconds

Step 3: Wait for 2 minutes and execute the following commands
# cd $ORACLE_HOME/bin
# ./localconfig delete
Stopping CSSD
Failure in CSS initialization opening OCR.
Shutdown has begun. The daemons should exit soon.

Step 4: Execute the following command

# ./localconfig add
Successfully accumulated necessary OCR keys.
Creating OCR keys for user root, privgrp 'system'
Operation Successful
Configuration for local css has been initialized.
Adding to inittab
Startup will be queued to init within 30 seconds
Checking the status of new oracle init process..
Expecting the CRS daemons to be up within 600 seconds
CSS is active on these nodes
nodelist
CSS is active on all nodes
Oracle CSS service is installed and running under init(1M)

Step 5: Start the ASM instance now.


Thanks

Convert Archivelog Mode to NoArchivelog Mode in RAC

Step 1: Set the Environment Variable
$ hostname
node1
$ export ORACLE_SID=gcprod1
$ sqlplus system @ gcprod1
password:

Step 2: Disable Cluster
SQL> alter system set CLUSTER_DATABASE=FALSE scope=spfile;
system altered

Step 3: Set the parameters (Optional)
SQL> alter system set LOG_ARCHIVE_START= FALSE scope=spfile;
system altered

Step 4: Shutdown the database
SQL> exit
$ srvctl stop database -d gcprod

Step 5: Mount the database

$ echo $ORACLE_SID
gcprod1

$ sqlplus "sys as sysdba"
SQL> startup mount
ORACLE instance started
Total System Global Area: 4.4678E+10 bytes
Fixed Size 2166864 bytes
Variable Size 4345302960 bytes
Database mounted.

Step 6: Disable Archive log
SQL> alter database noarchivelog;

Step 7: Enable the cluster
SQL> alter system set CLUSTER_DATABASE=TRUE scope=spfile;
system altered

Step 8: Shutdown the instance
SQL> shutdown immediate;

Step 9: Start all the instances
$ srvctl start database -d gcprod

Step 10: verify the status.
$ crs_stat -t
all instances must be online

$ sqlplus "sys as sysdba"
SQL> archive log list
Database log mode No Archive Mode
Automatic archival Disabled
Archive destination USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence 308
Next log sequence to archive 309
Current log sequence 309

Your database is in No Archive Log Mode.