DST in Russia

Daylight Saving Time in Russia has been changed last year. Oracle published a FAQ on the support site about this: Russia abandons DST in 2011 – Impact on Oracle RDBMS [ID 1335999.1].

WLS + Oracle benchmark – 2

Another press release from Oracle on the same topic: benchmark of WLS 10.3.3 (not released yet) + Oracle 11.2.0.1 @ Dell PowerEdge R910 Server with 4×8-core beasts X7560 (announced today by Intel). Benchmark was done by Oracle itself (previous were conducted by Cisco & HP). Results and FDA are here. DB & WLS configuration are pretty much the same as in previous run, but there are some variations in numbers, like ~400GB redo logs instead of ~140GB; with one big change: compatible=11.2.0.1.

WLS + Oracle benchmark

Today Oracle announced this press release. Cisco Systems tested WebLogic SE 10.3.3 (not available yet) + single-node Oracle 11gR2 @ Cisco UCS C250 M2 Rackmount Server with 2×6-core Intel Xeon X5680 (not available yet) – here are the results. I want to highlight some specifics about this test bed – after all, it’s interesting to know what’s behind the scene.

“java.lang.OutOfMemoryError: unable to create new native thread” in WLS

Recently I’ve struggled with subj. One of the customers of the company I’m working has encountered several “java.lang.OutOfMemoryError: unable to create new native thread” appearances in a clustered WebLogic Server 9 environment. Here I’ll describe why it could happen and possible workarounds for this error.