Currently the oracle database is updated to the Oracle 12c version, the oracle client of hp service manager runs in the Oracle 10g version.
How can I update the Oracle client?
If your Oracle db and SM is on the same box, no Oracle client is required for the communication. If your SM is on a different box, you just need to download the Oracle 12c client and install it on the SM box. If there is 32bit and 64bit version, choose the 32bit version as SM is still a 32bit app.