How a double entry for LAST_ARCHIVE_TIMESTAMP can stop your audit purge in 12c

In the last nine month we were busy migrating our 11g databases to 12c rel. 2. Due to time constrictions we decided early in the project to migrate 1:1. This meant that we did not make use of the CDB/PDB-feature. During the course of the upgrades my colleagues encountered a couple of “special features” or “points of attention”, about which they will report in their own blog articles. Here, I like to highlight a special (more...)