Db2 vs. Oracle Java SE Subscription

I have primarily used it as the basis for a SIS - but I have migrated more than a few systems from there database systems to DB2 (Filemaker, MySQL, etc.). DB2 does have a better structural approach, as opposed to Filemaker, which allows for more data consistency, but this can also lead to an inflexibility that can sometimes be counterintuitive when attempting to compensate for the flexibility of the work environment as Schools tend to have an all in one approach.

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The Oracle Java SE Subscription is a useful service that can support larger organizations that need to implement quick feature development and need to do so with maximum support with minimal fuss. Performance can vary due to the nature of Javas JVM having to boot upon every start and there can be some compatibility issues with a few third-party systems. Smaller organizations would be better off utilizing Java SDK or OpenJDK as these are free but don't have the benefit of direct support from Oracle. If a larger organization has a long history of using Java and has legacy systems running on older versions of Java, then the extra support needed will more than justify the cost If you are heavily invested in Java and need to support applications running on older versions such as Java 8, or you want to use OracleJDK, then you would want to consider getting the subscription for its support and patches.

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• While we query a large set of data, the results are generally available within a minute or so.
• Always reliable - I have never experienced an application going down.
• It is easy to write queries and find tables and columns.
• We can log in smoothly without any headaches.

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• Collect in an inventory all versions of Java that have been used in different applications.
• Determine the status of old versions of Java and update or apply essential security patches.
• Oracle Support is the best to be able to solve problems in an agile and safe way.
• Fast update cycles to make new features available.

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• Learning curve for DB resources - Improvements to UI or native command line built-ins can help with increasing efficiencies for DB resources
• Better resource utilization monitoring and recommendations
• Continue to adopt support for modern frameworks and languages making it easier for organizations to see making Db2 the easy first choice

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• AMC Usage details hard to Decipher and Categorize
• AMC JRE Upgrades have very limited Scheduling of Deployments, should be more like SCCM. Where you know exactly when deployments are going out. Not just when the Agent decides to check in.
• Cost is WAY too high

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The DB2 database is a solid option for our school. We have been on this journey now for 3-4 years so we are still adapting to what it can do. We will renew our use of DB2 because we don’t see. Major need to change. Also, changing a main database in a school environment is a major project, so we’ll avoid that if possible.

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It provides an affordable way to protect your investment.

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You have to be well versed in using the technology, not only from a GUI interface but from a command line interface to successfully use this software to its fullest.

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I have never had DB2 go down unexpectedly. It just works solidly every day. When I look at the logs, sometimes DB2 has figured out there was a need to build an index. Instead of waiting for me to do it, the database automatically created the index for me. At my current company, we have had zero issues for the past 8 years. We have upgrade the server 3 times and upgraded the OS each time and the only thing we saw was that DB2 got better and faster. It is simply amazing.

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The performances are exceptional if you take care to maintain the database. It is a very powerful tool and at the same time very easy to use. In our installation, we expect a DB machine on the mainframe with access to the database through ODBC connectors directly from branch servers, with fabulous end users experience.

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Easily the best product support team. :) Whenever we have questions, they have answered those in a timely manner and we like how they go above and beyond to help.

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As I mentioned before, quality of support from Oracle Java SE Subscription is extraordinary. The speed of resolution and the expertise of the staff is really appreciated. We raised a high priority support incident which blocked our process [and] Oracle Java SE support did a quick analysis and provided a solution which took less time than we expected. They also help us in installing patches and updates whenever required.

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the material was very clear and all subjects have been handled

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db2 work well with the application, also the replication tool can keep it up

DB2 was more scalable and easily configurable than other products we evaluated and short listed in terms of functionality and pricing. IBM also had a good demo on premise and provided us a sandbox experience to test out and play with the product and DB2 at that time came out better than other similar products.

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It is more suitable and effective to opt for Oracle Java SE Subscription to receive enhanced support for your Java SE Applications. The support team is highly qualified and technically sound to manage your Java SE Applications properly. Also they are available 24*7 to make sure applications are up-to-date.

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By
using DB2 only to support my IzPCA activities, my knowledge here
is somewhat limited.

Anyway,
from what I was able to understand, DB2 is extremely scallable.

Maybe the information below could serve as an example of scalability.

Customer have an huge mainframe environment, 13x z15 CECs, around
80 LPARs, and maybe more than 50 Sysplexes (I am not totally sure about this
last figure...)

Today
we have 7 IzPCA
databases, each one in a distinct Syplex.

Plans
are underway to have, at the end, an small LPAR, with only one DB2 sub-system,
and with only one database, then transmit the data from a lot of other LPARs,
and then process all the data in this only one database.

The
IzPCA collect process (read the data received, manipulate it, and insert rows
in the tables) today is a huge process, demanding many elapsed
hours, and lots of CPU.

Almost
100% of the tables are PBR type, insert jobs run in parallel, but in 4 of the 7
database, it is a really a huge and long process.

Combining
the INSERTs loads from the 7 databases in only one will be impossible.......,,,,

But,
IzPCA recently introduced a new feature, called "Continuous
Collector".

By
using that feature, small amounts of data will be transmited to the central
LPAR at every 5 minutes (or even less), processed immediately,in
a short period of time, and with small use of CPU,
instead of one or two transmissions by day, of very large amounts of data and
the corresponding collect jobs occurring only once or twice a day, with long
elapsed times, and huge comsumption of CPU

I
suspect the total CPU seconds consumed will be more or less the same in
both cases, but in the new method it will occur in small bursts
many times a day!!

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• Negative: Difficult and manual deployment
• Negative: Missing assistants from common monitoring metrics
• Positive: Stability
• Positive: Performance
• Positive: Resiliency and high availability (HADR)
• Positive: Data Replication (Q-Rep)
• Positive: Interaction with storage subsystems for backups (TSM, SVC)
• Positive: Gigantic monitoring features in the form of table functions

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• Code portability allowed us to run the same code on all platforms
• Security is always a key issue especially in the world of increasing cybersecurity laws. It only makes sense to invest in a secure development environment
• Developers appreciate rich community support for java se platform

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