When NNMi is upgraded to 9.20, SPIs still remain at 9.10 level till they are upgraded and ovstart -c tries to start the SPI jbosses which are running on older version with newer NNMi version.This results in lots of exceptions in NNMi logs and also slows down the User Interface performance.
Before doing the upgrade, Edit the file $NnmDataDir/shared/nnm/conf/ovsuf, to disable starting iSPI. This is done by changing the leading '0' in the records for all non NNMi daemon entries to '1'.That will not start the non-NNMi processes, when the upgrade occurs. If the above step was not done prior to upgrade, then should follow the steps given below to recover from this issue Stop NNMi and other iSPIs with ovstop start only NNMi processes by doing:
1.ovstart -c nmsdbmgr
2.ovstart -c ovjboss
3.ovstart -c pmd
4.ovstart -c nnmaction
NnmDataDir=\ProgramData\HP\HP BTO Software
5.Upgradet the iSPI applications installed.