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Bug with prefactoring and nondeterministic SQL
Sometimes the results of a SQL is not at all what you expected. Most of the time it is a simple error you’ve made. Very rarely is it an issue that after hours of looking at it still looks like SQL does something wrong, But it still happens. This post is about one such situation…
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LUHNs algoritm – Three ways with SQL and PL/SQL
Have you encountered LUHNs algorithm? I can almost guarantee it even if you’ve never heard the name before. It is part of all of our lives every single day. It is used to check that various numbers are correctly entered. From ID numbers for persons in Sweden, Greace, and Israel to credit card numbers and…
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Waiting for direct write temp – but what file?
This is essentially a not for myself for the next time I forget. It seems to be like once every other year I figure this out. It is not too easy to google for so it usually takes a bit too long. So you have identified the event “direct path read temp” or “Direct path…