Blog theme

I know, I know… The theme looks exactly like the one Jonathan Lewis has for his Scratchpad. Sorry, about that. I’ve tried every possibility and this is the only one that is comfortable for posting Oracle trace or code snippets. The closest thing I found that wouldn’t wrap the code is a Sandbox theme. Others would have very small or otherwise irritating font.

“Undocumented?!” – Use it or not

Rainy day… Thoughts arn’t well aligned… At the end of the day I was wondering on the Internet searching for an inspiration. For a moment I thought I found something interesting. It was on the Jonathan Lewis’s blog – something about Oracle traces. But just a second later after finished reading I grasped what the message was about. In few words there was confusion, doubt and something else, or so it seemed. The title was Trace Files. And here you go an inspiration came, and as usual from a direction you’d never expect. Read the rest of this entry »

Statement Cache causes OutOfMemoryError (JDBC)

How efficient parse one – execute many in JDBC can get? So obvious recommendation to keep PreparedStatement open as long as possible is not easy. Testing custom built statement cache solution proved it to be not very well scalable. Increasing number of concurrent connections or the size of the cache of open statements lead to ineviable OutOfMemoryError exceptions. Read the rest of this entry »