This article looks at the new Oracle Exadata X4-2 Database Machine from Big Red. In part one I looked at the changes made from the X3 model (more stuff) as well as the implications (more license bills). I also covered some of the confusing and bewildering descriptions Oracle has used to describe the flash capacity … Continue reading Oracle Exadata X4 (Part 2): The All Flash Database Machine?
Tag: ASM
Strange ASM Behaviour with 4k Devices
This is only a short post to document something I've seen and reproduced but still don't understand. Storage devices generally have a physical sector size of 512 bytes or, more recently, 4k. This is a subject which causes much confusion (partly because some vendors seek to portray whichever sector size they use as "better"). You … Continue reading Strange ASM Behaviour with 4k Devices
ASM Metadata Utilities
One of the things I meant to write about when I started this blog was the undocumented stuff in Oracle that is publicly available. Since I used to spend a lot of time working with ASM I had an idea that I would write an article about kfed, the kernel file editor used to query … Continue reading ASM Metadata Utilities
flashdba 