I wrote recently about Kibana’s excellent Timelion feature, which brings time-series visualisations to Kibana. In the comments Ben Huang asked: do you know how to show whats the difference between this Friday and last Friday by Timelion? So I thought I’d answer properly here. Timelion includes mathematical functions including add and subtract, as well as the ability to show data offset by an amount of time. So to answer Ben’s query, we combine the two.

Another quick note on OBIEE 12c, this time on the importServiceInstance command. If you run it with a BAR file that doesn’t exist, it’ll fail (obviously), but the error at the end of the stack trace is slightly confusing: oracle.bi.bar.exceptions.UnSupportedBarException: The Bar file provided as input is not supported in this BI Platfrom release. Scrolling back up the stack trace does show the error message: SEVERE: Failed in reading bar file.