Just a snippet of how I proved we were setting values to the default. While this has no negative impact, it does result in needless conversations like… “Why did we set that?” “It’s the default, don’t worry about it.” “Really?…
Pentaho row level security example
Using the Metadata Editor, it should be placed at the Business Model layer, above any business tables. Click the data constraints section (or add that section with the olive green plus button in the screenshot below, if necessary), select the…
TCP zero window flow
When troubleshooting this condition, it is imperative that you obtain a thread dump on the client. There is a reason it cannot consume the data being sent to it from the server, so you need to understand why it is…
Can two switches talk to each other?
Yes, and you don’t even need a crossover cable for the connection on newer switches. One important proviso is that this can be only on the default VLAN. If you use a different VLAN, the mode must be trunk rather…
Child records where no parent exists?
This is a great interview question: How can there be child records where no parent exists? This is actually a trick question. There can exist child *records*, but no *values* for the column that references a non-existent parent. In other…
Weblogic stuck thread printer
This is a useful script for crawling the Weblogic domain logs and printing threads that have been stuck, as well as the duration they were stuck. It doesn’t include the initial ten minute (default) window before a log entry is…