ORA-00444: background process "LMD0" failed while starting
ORA-07446: sdnfy: bad value '' for parameter .
This is where all the trace files and alert logs can be found. The background dump files are in the $ADMHOME/bdump
sub-directory, but in this example are further separated by instance, so that locating instance-specific trace files is easier.
The core file dump and user trace file locations are common across all four nodes, but could also be separated into instance-
specific subdirectories. Make sure these directories are created before you attempt to startup an instance or you
might see these errors