Oracle Enterprise Manager Review

Helpful in performing operations for monitoring and management from one place.

What is most valuable?

I have mainly used it for management, monitoring and tuning for Oracle databases.

How has it helped my organization?

We manage and monitor many databases for customers (some customers have a few hundred databases) and OEM is extremely helpful in performing operations for monitoring and management from one single place. Setting up various jobs including RMAN backups is extremely helpful via OEM. We also use features such as corrective actions, where we can ask OEM to take appropriate corrective actions when an event occurs in the middle of the night.

What needs improvement?

I have been using OEM 13c which is their latest release and I would have expected that the product would have been more stable and should not have bugs for very simple things like CPU utilisation or amount of physical memory on Linux hosts. These are very fundamental metrics to monitor and should not be an issue. These are not a new features and I would have expected a much better release of the product.

For how long have I used the solution?

I have been using OEM since 2002.

What was my experience with deployment of the solution?

I have deployed OEM 11g and 12c in High availability mode and was not too complicated to implement. I have not tried HA with 13c. However, installation for all the releases have been fine.

What do I think about the stability of the solution?

We've experienced no issues with performance.

What do I think about the scalability of the solution?

It's been able to scale for our needs.

How are customer service and technical support?

To me its like a lottery, if I am lucky I get a support engineer who knows what they are talking but many a times you get someone who just keeps asking very fundamental questions until you have to ask on duty manger to be involved and have the SR escalated. But I guess, it is the same across any other vendor.

Which solution did I use previously and why did I switch?

I have used custom scripts and still do use it for standard edition of databases where OEM cannot be used. However, I prefer to use OEM wherever possible.

How was the initial setup?

Although custom scripts might be easy to setup, the issue is when the person who wrote the scripts leaves an organisation, all the knowledge walks out as well.

What about the implementation team?

Like any product, it is best that the implementation is done by someone who understands it well, whether done in-house or by third party. It saves a lot in long run and you know that its done right.

What's my experience with pricing, setup cost, and licensing?

For any Enterprise edition database customer, I highly recommend that they should implement OEM and at a minimum purchase license for Diagnostic and Tuning pack for database. Amount of time required to perform many activities such as tuning and diagnostics pays off.

What other advice do I have?

Do it once and do it right.

Which version of this solution are you currently using?

**Disclosure: I am a real user, and this review is based on my own experience and opinions.
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