Oracle’s Enterprise Manager is an on-premises monitoring and management tool. The console is designed primarily to manage other Oracle products, it but can integrate to manage non-Oracle components as well.
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Percona Monitoring and Management (PMM)
Score 8.0 out of 10
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Percona Monitoring and Management (PMM) is a free, open-source database monitoring and management solution. It helps enterprises reduce complexity and simplify management, while optimizing performance and improving the security of business-critical database environments - on-premises or in the cloud. It provides thorough time-based analysis for MySQL, PostgreSQL, and MongoDB servers to ensure that data works as efficiently as possible. PMM allows users to identify the issues that…
OEM is very well suited for all Oracle products, especially Oracle databases and Exadata machines; even not Oracle hardware, it is very good and displaying high level details. OEM is not well suited for older hardware vendors like AIX, HP-UX, DEC/Digital, Microsoft (sql server). This is a big negative as most large companies have a heterogeneous environment with many different vendor hardware and (database) software products.
I suggest you try [Percona Monitoring and Management (PMM)] at least once. Afterward, it will make you feel relaxed. It really works and gives you more than your expectations. It is equipped with multiple latest and advanced tools that will fully satisfy you. So obviously there will be no need to concern other devices. It is an excellent data management solution and also it is the best monitoring device than any other.
Monitoring Templates: There are out of box monitoring templates for each target types, you can customize them or use them as it is.
Administrative Groups: This is a relatively new feature in OEM Cloud Control. This lets you create and manage your targets and monitoring templates smarter and with less re-work.
DB Monitoring: There are so many cool DB monitoring features and visual graphics, that it can be used by both DBA and functional people to see what's going on in the database.
Bugs. Every version we upgrade to has a number of bugs. Some stop us from rolling to production OEM (we have a sandbox OEM), some are simply annoying. If I could improve on one thing, it would be for better QA from oracle before releasing each version.
Flash. I'm told that they are moving from Flash to Jet in version 13.3 and beyond (we are on 13.2 currently). That change cannot come soon enough. The OEM pages load SO slowly due to Flash.
Hierarchy Groups. OEM allows five Hierarchy groups. A Hierarchy group allows a top down metric/rule roll out. However, they limit you to five. I'd like to see them open that up, so that we can have any number of custom groups.
Sometimes it creates problems while serving a huge number of servers but I am sure its efficient team will overcome this problem soon and with its rapid advancements there will surely be more latest and advanced alerting options.
Truly speaking this is a great invention with very few shortcomings. I never face any dependency issues.
It's great! It does everything and anything you would want it to do. It can monitor things which doesn't comes out of the box by adding plug ins to it, for example, you can even monitor Oracle GoldenGate Replication by adding a plug-in to OEM Cloud Control.
I am using PMM for a long time now and the Dashboard provides a great overview for general server health and law. You get to watch if there are many queries when you get a problem. Time-based analysis for MySQL and MongoDB servers to confirm that your data works as efficiently as possible. We could improve database performance significantly.
I still rate OEM as a must-have tool for central management of Oracle fleet. The pros and cons of the product is prominent. Meanwhile, I also acknowledge that OEM was design about a decade ago. At that time, it did not have the landscape we have today, such as cloud, DEVOPS, machine learning, etc. I hope in future releases, the design will incorporate those features.
Percona has a history of being good at providing really informative materials in form of blog post, documentation, webinars or conference presentations. T is also true to the Percona Monitoring and Management, you can find excellent source of information on their site or on the forum. Support tickets are also handled well.
Being an Oracle shop using Oracle Database and MySQL, management console from Oracle was a better choice than IBM or Microsoft even though we do use Microsoft Azure and storage/servers from IBM (on-prem).
We are a 7x24 shop. Oracle Enterprise Manager Cloud Control helps us meet that objective by proactively warning us before issues cause down time. Things like disk space, archive log issues or temporary table space issues.
Spreading the use of this tool outside of the DBA group has allowed us to not hire additional personnel for those teams. Over time, as folks have retired from our operations team, we are not replacing them. Instead we have used OEM Cloud Control to automate tasks.
We also now have the tools to measure up-time by using specific measurements inside of OEM. This allows us to report real numbers to management.
This is a matchless tool for keeping us alert with all amazing monitoring capabilities. Almost all of its features and functionalities help us in achieving our goals by enhancing success rates.
