Posts tagged failover
I’ve been using RAC (10gR2) for years now and I was wondering how RAC One Node differs from RAC. That’s why I used a few ‘old’ RAC servers that we had ‘laying’ around to install a RAC One Node Cluster. I also used that cluster to get some hands on experience with ASM but that is not the topic for this post, so I will not go into that further.
I assume that installing the software is a breeze for everyone who has some experience with RAC and who has read the manual so I will not go into that as well. Once you have fulfilled the prerequisites it’s a matter of next, next, finish. (more…)
A few years ago I was lucky to be able to start working for a client that has Oracle RAC clusters. There we encountered lot’s of interesting issues, and one of them was that several client applications couldn’t seem to connect to the RAC cluster whenever a service was failed over to an other instance then the default.
The network environment was a bit different then I was used to work with. There are three domains in use: - domainA for the RAC and other servers, - domainB for the desktop pc’s and laptops - domainC for the citrix farm and the applications hosted there
The tnsnames.ora for domainB and domainC contained an entry like: