I have installed xlogviewer and it gives me data like that: [cur:0/5770E87C, xid:355075, rmid:10(Heap), len:88/116, prev:0/5770E840] > update: s/d/r:1663/90693/107093 block 1 off 36 to block 107 off 30 > [cur:0/5770E8F0, xid:355075, rmid:11(Btree), len:34/62, prev:0/5770E87C] > insert_leaf: s/d/r:1663/90693/107099 tid 20/101 > [cur:0/5770E930, xid:355075, rmid:11(Btree), len:38/66, prev:0/5770E8F0] > insert_leaf: s/d/r:1663/90693/107100 tid 42/146 > [cur:0/5770E974, xid:355075, rmid:11(Btree), len:30/58, prev:0/5770E930] > insert_leaf: s/d/r:1663/90693/107101 tid 21/97 > [cur:0/5770E9B0, xid:355075, rmid:11(Btree), len:30/58, prev:0/5770E974] > insert_leaf: s/d/r:1663/90693/107102 tid 28/7 > [cur:0/5770E9EC, xid:355075, rmid:11(Btree), len:30/58, prev:0/5770E9B0] > insert_leaf: s/d/r:1663/90693/107103 tid 33/2 > [cur:0/5770EA28, xid:355075, rmid:11(Btree), len:30/58, prev:0/5770E9EC] > insert_leaf: s/d/r:1663/90693/107104 tid 18/232 > [cur:0/5770EA64, xid:355075, rmid:11(Btree), len:54/82, prev:0/5770EA28] > insert_leaf: s/d/r:1663/90693/107105 tid 46/109 > [cur:0/5770EAB8, xid:355075, rmid:11(Btree), len:30/58, prev:0/5770EA64] > insert_leaf: s/d/r:1663/90693/107106 tid 17/99 > [cur:0/5770EAF4, xid:355075, rmid:10(Heap), len:84/112, prev:0/5770EAB8] > update: s/d/r:1663/90693/107093 block 1 off 37 to block 107 off 31 > [cur:0/5770EB64, xid:355075, rmid:11(Btree), len:34/62, prev:0/5770EAF4] > insert_leaf: s/d/r:1663/90693/107099 tid 20/143 > [cur:0/5770EBA4, xid:355075, rmid:11(Btree), len:34/62, prev:0/5770EB64] > insert_leaf: s/d/r:1663/90693/107100 tid 30/80 > [cur:0/5770EBE4, xid:355075, rmid:11(Btree), len:30/58, prev:0/5770EBA4] > insert_leaf: s/d/r:1663/90693/107101 tid 21/132 > [cur:0/5770EC20, xid:355075, rmid:11(Btree), len:30/58, prev:0/5770EBE4] > insert_leaf: s/d/r:1663/90693/107102 tid 28/7 > [cur:0/5770EC5C, xid:355075, rmid:11(Btree), len:30/58, prev:0/5770EC20] > insert_leaf: s/d/r:1663/90693/107103 tid 33/2 > [cur:0/5770EC98, xid:355075, rmid:11(Btree), len:30/58, prev:0/5770EC5C] > insert_leaf: s/d/r:1663/90693/107104 tid 18/232 > [cur:0/5770ECD4, xid:355075, rmid:11(Btree), len:50/78, prev:0/5770EC98] > insert_leaf: s/d/r:1663/90693/107105 tid 40/100 > [cur:0/5770ED24, xid:355075, rmid:11(Btree), len:30/58, prev:0/5770ECD4] > insert_leaf: s/d/r:1663/90693/107106 tid 30/137 > [cur:0/5770ED60, xid:355075, rmid:10(Heap), len:84/112, prev:0/5770ED24] > update: s/d/r:1663/90693/107093 block 1 off 38 to block 107 off 32 > [cur:0/5770EDD0, xid:355075, rmid:11(Btree), len:34/62, prev:0/5770ED60] > insert_leaf: s/d/r:1663/90693/107099 tid 20/187 > [cur:0/5770EE10, xid:355075, rmid:11(Btree), len:34/62, prev:0/5770EDD0] > insert_leaf: s/d/r:1663/90693/107100 tid 31/43 > [cur:0/5770EE50, xid:355075, rmid:11(Btree), len:30/58, prev:0/5770EE10] > insert_leaf: s/d/r:1663/90693/107101 tid 21/152 > [cur:0/5770EE8C, xid:355075, rmid:11(Btree), len:30/58, prev:0/5770EE50] > insert_leaf: s/d/r:1663/90693/107102 tid 28/7 > [cur:0/5770EEC8, xid:355075, rmid:11(Btree), len:30/58, prev:0/5770EE8C] > insert_leaf: s/d/r:1663/90693/107103 tid 33/2 > [cur:0/5770EF04, xid:355075, rmid:11(Btree), len:30/58, prev:0/5770EEC8] > insert_leaf: s/d/r:1663/90693/107104 tid 18/232 > [cur:0/5770EF40, xid:355075, rmid:11(Btree), len:50/78, prev:0/5770EF04] > insert_leaf: s/d/r:1663/90693/107105 tid 56/107 > [cur:0/5770EF90, xid:355075, rmid:11(Btree), len:30/58, prev:0/5770EF40] > insert_leaf: s/d/r:1663/90693/107106 tid 18/28
Is there any way to use this data for undo? On Thu, Mar 15, 2012 at 4:22 PM, Ivan <kuzma...@gmail.com> wrote: > Hi all. > > Today an accident happened on one of my databases. I have a table named > "payments" with about 5400 rows. I have done a query "update payments set > amount = 0; where id in (2354,2353,1232)". Please note the semicolon inside > — I missed it =( > > Now all my data is lost. And after this happened I realized that backups > script is broken (my fault, I know) > > I googled a little and have found that there is a chance to restore my > data using files in pg_xlog directory. But everybody say about PITR and I > don't use it. Also there is a xlogviewer project (from old 2006) that I'm > trying to install on my Gentoo right now. > > I copied all PGDATA directory and made a dump of all databases. Also I > turned off my webserver. Postgres is still running. > > Please give me some step-by step guide what should I do next? Is there any > chance to restore my data? > > I use postgresql 8.4 with default config (autovacuum is commented) > > -- > ______________________________ > Yours sincerely, Ivan Kuznetsov aka Kuzma > mailto: kuzma...@gmail.com > -- ______________________________ Yours sincerely, Ivan Kuznetsov aka Kuzma mailto: kuzma...@gmail.com
