I had a lot of project with Oracle RAC on HP-UX based on Intel Itanuim platform.
We started with version 10.1.0.4, but quickly moved to 10.2.0.2 when it became available.
There were clusters with 2, 4 and 8 nodes and there weren’t stability problems with 2 or 4 nodes cluster, but those one – with 8 nodes … was the real nightmare…
At some point in time there were about 28 databases and ASM… was hanging… every 2 days!!!
To temporary resolve this hanging issue customer had to shutdown all ASM instances at once and than start them – so it required FULL CUSTER OUTAGE… Continue reading