lsnodes: error while loading shared libraries: libskgxn2.so: cannot open shared object file: No such file or directory

Seeing error "lsnodes: error while loading shared libraries: libskgxn2.so: cannot open shared object file: No such file or directory" when trying to extend the DB home on to the RAC 2nd node.


Seeing below Error:

INFO: /u01/app/oracle/product/12.1.0.2/db_1/oui/bin/../bin/lsnodes: error while loading shared libraries: libskgxn2.so: cannot open shared object file: No such file or directory
INFO: Vendor clusterware is not detected.
INFO: Error ocurred while retrieving node numbers of the existing nodes. Please check if clusterware home is properly configured.
SEVERE: Error ocurred while retrieving node numbers of the existing nodes. Please check if clusterware home is properly configured.
INFO: Alert Handler not registered, using Super class functionality
INFO: Alert Handler not registered, using Super class functionality
INFO: User Selected: Yes/OK

This error is due to the wrong lsnodoes in DB_HOME.

The solution is to create the following symbolic link from GI Home to DB home on Node1 before adding the 2nd node.

As the oracle db user (oradba):

$ export GRID_HOME=/u01/app/12.1.0.2/grid

$ export DB_HOME=/u01/app/oracle/product/12.1.0.2/db_1

$ cd $DB_HOME/oui/bin

$ mv lsnodes lsnodes.old

$ ln -s $GRID_HOME/bin/olsnodes $DB_HOME/oui/bin/lsnodes

$ ln -s $GRID_HOME/bin/olsnodes.bin $DB_HOME/oui/bin/lsnodes.bin

Now retry to add the oracle home on 2nd node.

CRS-2922: The attribute 'ORACLE_USER' is not supported for resource type 'ora.gipc.type'. CRS-4000: Command Add failed, or completed with errors.

When I tried to start the 12.1.0.2 CRS in one of the RAC nodes on Linux, seen the error "CRS-2922: The attribute 'ORACLE_USER' is not supported for resource type 'ora.gipc.type'. CRS-4000: Command Add failed, or completed with errors." 


Solution:-

As root user executed the command

crsctl add res ora.gipcd -type ora.gipc.type -attr  "ACL='owner:oragrid:rw-,pgrp:oinstall:rw-,other::r--,user:oragrid:rwx'" -init

Here oragrid is the grid user and oinstall is the group.

Now start the CRS ./crsctl start crs.