Oracle The Most Mysterious Cases

It was on a cold day in November when the silence was broken by a desperate scream: ‘Kill it! Kill it!”. The boss immediately pushed the button and brutally terminated the session. It has happened again… The Performance was murdered. Boss flicked through the case files. There were no usual suspects. Where is the murderer hiding then?The desk was buried under the cases’ files similar to this one. The File that hasn’t been seen in production for 6 months, the whole team has been looking for it, but there was no progress, not even a clue… Another reported missing - Data has left the Source System but never reached the Destination server…Nobody has seen it again…This is too much for one person. And that’s why I need YOUR help!During the session, we will solve all the mysterious cases together and we will find out what is responsible for the strange behavior of the system. Is the source of the problem a huge design error or a small decision at one of the stages of development? How minor design decisions can affect the system's performance and vulnerability to errors? Who is the murderer?The answer may surprise you!