I recently (well, OK, not all that recently) received this request: Our Java developers think that the work can be done faster with Hibernate by basically eliminating the "middle-men" and "middle-women" (ie. the database developers) for what they think is the simpler database access tasks for basic forms and reports. It is true that Java developer out number PL/SQL developers by about 10:1 at my company - so we do/would have a lot of work to do. But I've talked with the other PL/SQL developers and while we are all rather busy. there are almost no cases of PL/SQL tasks needing to rollover from one sprint to the next (meaning, or course, that a PL/SQL task didn't get done on time). We want to make sure that our company continues to use PL/SQL for the database access layer in our application. Can you help? Hibernate offers an ORM (Object Relational Mapping) tool: "Hibernate ORM enables developers to more easily write applications whose data outlives the application process. As an Object/Relational Mapping (ORM) framework, Hibernate is concerned with data persistence as it applies to relational databases (via JDBC)." I have never used Hibernate or any other ORMs, as I live within the database. The idea of an ORM is quite appealing: rather than write the SQL to perform the necessary SQL to overcome the "impedance" mismatch between objects and tables, Hibernate generates it for you. Which is great, until the SQL that is generated doesn't perform well. Then you have to start customizing or going around your ORM, and so on. I have, over the years, heard from lots of frustrated Oracle Database developers who are sick of hearing them (or Oracle Database) being blamed for bad application performance, while they are simultaneously not able to (easily, at least) do what it takes to use Oracle Database properly. So I have a request: do you have experience with Hibernate, or another ORM? Please share your experience, both positive and negative, below in the Comments section. Others, including the fellow who wrote the above message, can then use this information to help their company make the most informed decision. Thanks!
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