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My splitvg Went Splat (updated)

AnthonyEnglish Comments (2) Visits (2919)

A couple of years ago I wrote about the splitvg command . This takes a volume group (VG) that has been mirrored using mirrorvg , and effectively breaks off one copy of the mirror, turning it into a point-in-time snapshot. The snapshot can then be used for reports, backups or for building a new database. I'm not sure how much this is used in the real world these days, but if you are still doing your backups this way, perhaps it's time to revisit the strategy. Split & Resynch Never heard of it? Here's how it works. After you've... [More]

Tags: backup splitlvcopy multibos alt_disk_copy splitvg

Low-impact database clone with splitvg

AnthonyEnglish Comment (1) Visits (5154)

"Slow = OK, but keep the downtime down" I had to make a copy of a production Oracle database so it could be used on a new LPAR. Following Chris Gibson's post on the splitvg command , I decided that splitvg was the way to go. I did have other options, such as SAN cloning or restoring from backup, but the business owner was happy to do the clone by using software mirroring and then splitting the mirror. The software mirror was from the existing RAID array (on SAN) to a second RAID array. (That's what I call redundancy). The business... [More]

Tags: aix clone volume group splitlvcopy database splitvg

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My splitvg Went Splat (updated)

Low-impact database clone with splitvg