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MySQL Recipes: Promoting a Slave to Master or Changing Masters

In MySQL–land, failovers for redundancy, disaster recovery, or load balancing are performed by master databases and slave databases, the most popular method using binlog replication. There are a couple more methods of replication which aren’t covered here. Also see the MySQL Replication FAQ. The methods are the same, but the formatting of the procedure(s) are less than ideal.

Oracle Security vs Microsoft Security

I always get a chuckle well not always but often, when I read anything to do with Microsoft vs. “the flavour of the month”. In this case, it looks like the flavour of the month is Oracle. The articles simple imply that SQL Server is more secure than Oracle. They go on to count the number of vulnerabilities identified over the last few years. It’s scary stuff and I’m sure we’re all running out now to ask our architects and DBAs how quickly we can port over to SQL Server.

Oracle Listener Crash in Windows

I faced a problem yesterday. The Oracle listener crashed each time a connection was made. The OS was WINXP SP2. It goes without saying that this was a testing install. The event log showed the following error in SYSTEM log and APPS log. Finally I found the following magic command which fixed the issue after running and restarting the box.

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