Avik Sengupta

I'm happy to merge a PR based on this discussion.

Thanks, no, I just need some free time to review and test the changes.

It's my guess that the slowdown is mainly due to the number of copies we make when converting from Java to Julia, but that's only a gut feel, I haven't...

Hi @walter-weinmann Thanks for reporting these issues. Can I ask, is the read time being measured by running `executeQuery` and then iterating on the returned resultset. From the [code here](https://github.com/KonnexionsGmbH/ora_bench/blob/abfc8128866eadbd2c220b37178afe3ab25bc7c7/lang/julia/OraBenchJdbc.jl#L813-L829),...

Yeah, I'm sure the oracle driver does not have any issues. I meant that the time is spent in the JNI communication layer. In the code you are running, there...

The `jcall` lines don't look right. The third argument is the type of the return value, and the fourth argument is a tuple of the types of the java method...

I'm not sure how IAM authentication works over JDBC. How does the Java code look like? Did you try to do this thru the Julia wrapper?

Not sure what is happening here? What version of Java are you using? If you write similar code in Java directly, does it work?

And which version of Julia? Also, is a Java stack trace printed at all? The trouble is, I do not have access to a netezza database, and even the driver...

Ah could you please try with Julia 1.0.x? There are some issues with threading and Julia 1.1/1.2