Which is the better career option? Oracle HRMS or Oracle HCM?

Each of these modules require a subscription paid directly to Oracle (because most clients choose the Cloud based version).

I have about 12 years of experience delivering Oracle HCM projects and I can definitely help you with this.

Oracle HRMS is a specific module, among others in a suite of modules called Oracle e-Business Suite.

In a nutshell, Oracle e-Business Suite is an on premise business applications installed at the client site when the licenses are purchased either directly from Oracle or through one of its partners.

Now back to your question. HRMS is just a composite which means you cannot pursue a career knowing this particular module only. Coming to Oracle HCM, it can be identified under two different suites of applications:

  1. e-Business Suite HCM, which includes mostly the following modules. Each of these modules require a separate license.
    1. Oracle HRMS,
    2. Self-service HR,
    3. Payroll,
    4. Time and Labor,
    5. Performance Management,
    6. Learning Management,
    7. iRecruitment,
    8. Incentive Management,
  2. Fusion HCM & Taleo, which includes mostly the following modules. Each of these modules require a subscription paid directly to Oracle (because most clients choose the Cloud based version). If a client chooses the on-premise option which is far more expensive, the same model applies as in e-BS (referred in point 1).
    1. Global HR,
    2. Payroll,
    3. Absence Management,
    4. Benefits,
    5. Goal Management,
    6. Performance Management,
    7. Compensation,
    8. Sales compensation,
    9. Work life solutions, (my wellness, my reputation etc,)

Oracle has reinforced the HCM Cloud SaaS (Software-As-A-Service) recently by investing heavily in Fusion HCM and Taleo which now comes under the new umbrella of Oracle HCM.

Does it make more sense now? A career following the Oracle HCM (i.e: Fusion HCM) is the right choice.

My advise is to learn Global HR well and then move on to other modules until you become an expert specialized in delivering Oracle HCM Solutions.