(Single) Table Recovery

Every DBA should know this situation. You receive a call from a user or customer. After executing a wrong command, for example, a DELETE without a correct WHERE clause or a script against the production database instead of the test database, the data of one or more tables have now a wrong state.

A rollback can solve this problem quickly, but what are the options when the transaction is already committed? In this presentation, I will explain possible ways to restore the state of a single table.

• Flashback Query/Table/Transaction
• Table Recovery using RMAN
• Export/Import
• LogMiner"

Migrating a TB Database from 11g Windows to 19c Linux in less than an hour

Upgrading a database with plattform migration is always challenging especially if you should hav a very short downtime. There are many ways to do this. In a recent project I used Transportable Tablespace for that. I'll show how I did this and what could go wrong.

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!

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!

(Single) Table Recovery

Every DBA should know this situation. You receive a call from a user or customer. After executing a wrong command, for example, a DELETE without a correct WHERE clause or a script against the production database instead of the test database, the data of one or more tables have now a wrong state.

A rollback can solve this problem quickly, but what are the options when the transaction is already committed? In this presentation, I will explain possible ways to restore the state of a single table.

• Flashback Query/Table/Transaction
• Table Recovery using RMAN
• Export/Import
• LogMiner"

Migrating a TB Database from 11g Windows to 19c Linux in less than an hour

Upgrading a database with plattform migration is always challenging especially if you should hav a very short downtime. There are many ways to do this. In a recent project I used Transportable Tablespace for that. I'll show how I did this and what could go wrong.