Monthly Archives: June 2013

VIP is not reachable after failover

If VIP was failed over from one host in subnet to another via manually running “ifconfig down” on one host and “ifconfig up” on another, you can see case when VIP become unreachable from outside of subnet. the problem should … Continue reading

Posted in Linux, Systems | Tagged , , , , , | 2 Comments

High CPU usage on DB host?

Its Unix 101 statement, but I have heard it wrong so many time, so decided to put a blog for it. So: If in OLTP environment, per ‘top’ %wa (IOWAIT) is major contributor for CPU busy, adding CPU would not … Continue reading

Posted in Linux, Oracle, Systems, Uncategorized | Tagged , , , , , , , , , , , | Leave a comment