Обсуждение: Data recovery after inadvertent update?
Hi all
Someone on SO has UPDATEd away some data they cared about. I've written a bit on what they might want to do, but really don't know enough, so I was hoping for some aid/ideas. In particular, is the advice to use " pg_ctl stop -m immediate" (to hopefully avoid a checkpoint) appropriate and useful? I'm just not sure.
http://stackoverflow.com/questions/12472318/can-i-rollback-a-transaction-ive-already-committed-data-loss
Also, are there any functions to read raw tuple bytes to `RECORD's? I couldn't find any in `pageinspect', `pgstattuple', `adminpack', etc. Am I right in guessing that they're pretty much going to require hand data recovery or the use of some custom C extension code to get at the data - if it still exists?
--
Craig Ringer
Someone on SO has UPDATEd away some data they cared about. I've written a bit on what they might want to do, but really don't know enough, so I was hoping for some aid/ideas. In particular, is the advice to use " pg_ctl stop -m immediate" (to hopefully avoid a checkpoint) appropriate and useful? I'm just not sure.
http://stackoverflow.com/questions/12472318/can-i-rollback-a-transaction-ive-already-committed-data-loss
Also, are there any functions to read raw tuple bytes to `RECORD's? I couldn't find any in `pageinspect', `pgstattuple', `adminpack', etc. Am I right in guessing that they're pretty much going to require hand data recovery or the use of some custom C extension code to get at the data - if it still exists?
--
Craig Ringer
Check this post on depesz.com:
http://www.depesz.com/2012/04/04/lets-talk-dirty/
--
Victor Y. Yegorov
2012/9/18 Craig Ringer <ringerc@ringerc.id.au>
Also, are there any functions to read raw tuple bytes to `RECORD's? I couldn't find any in `pageinspect', `pgstattuple', `adminpack', etc. Am I right in guessing that they're pretty much going to require hand data recovery or the use of some custom C extension code to get at the data - if it still exists?
Victor Y. Yegorov