Monthly Archives: June 2013

VIP is not reachable after failover

Posted on June 15, 2013 by alexeymoseyev

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?

Posted on June 3, 2013 by alexeymoseyev

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