There is a buglet when running OMA on SGE. This is triggered when running it as a single job. For instance, one would want to do that for building the databases with "OMA -c" or for the last step after all the "OMA -s".
The error message is:
only_run_dbconv := false
Starting database conversion and checks...
ERROR: ParallelInfo expects a 1st argument, NrParallelProc:posint, found: undefined
The workaround is to run OMA as:
qsub -t 1 OMA