Question about using virtual thread

[Attila Kelemen]

I have installed Oracle the "normal" way, and spent like a day on
configuring it to my liking :)

Anyway, now with Oracle added, I think most relevant DBs are there.

Also, I have confirmed what you wrote by benchmarking
"com.oracle.database.jdbc:ojdbc8:19.19.0.0" against
"com.oracle.database.jdbc:ojdbc11:21.9.0.0", and as expected the new
version is considerably faster.

Attila

Michael McMahon <michael.a.mcmahon at oracle.com> ezt írta (időpont: 2023.
jún. 27., K, 23:23):

> Hi Attila,
>
> For Oracle JDBC, I replaced almost all usages of “synchronized” with a
> ReentrantLock. This change first appears in version 21.1. The driver is
> distributed on Maven Central:
>
> <dependency>
>     <groupId>com.oracle.database.jdbc</groupId>
>     <artifactId>ojdbc11</artifactId>
>     <version>21.9.0.0</version>
> </dependency>
>
> To detect thread pinning, you might try:
>
> -Djdk.tracePinnedThreads=full
>
>
> This system property is documented in JEP 444:
>
> The system property jdk.tracePinnedThreads triggers a stack trace when a
> thread blocks while pinned. Running
> with -Djdk.tracePinnedThreads=full prints a complete stack trace when a
> thread blocks while pinned, highlighting native frames and frames holding
> monitors. Running with -Djdk.tracePinnedThreads=short limits the output to
> just the problematic frames.
>
> https://openjdk.org/jeps/444#Executing-virtual-threads
>
> Hope this helps.
>
> Thanks,
>
> Michael
>
>
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