On 7/17/20 8:51 PM, ertan(dot)kucukoglu(at)1nar(dot)com(dot)tr wrote:
> Hello,
>
> This is PostgreSQL v10.10 64Bit, running on Windows 10 64Bit.
>
> One user, by himself, without asking for help, cloned his OS from one disk to Hyper-V disk. Old disk was not accessed, OS was shutdown while he is doing the cloning. He used some kind of tool that I do not know for that purpose. New server is running under Hyper-V.
>
> Once he saw Hyper-V server is up and running he deleted old disk for good. Unfortunately, new system has more than brief problems. He has no backup of the database cluster or particular database(s) in it.
>
> I see in log following errors:
> 2020-07-16 12:28:17.598 +03 [3964] HATA (ERROR): "pg_opclass_oid_index" indeksinde 0 bloğunda beklenmeyen boş sayfa
> 2020-07-16 12:28:17.598 +03 [3964] İPUCU:Lütfen onu REINDEX'leyin.
> 2020-07-16 12:29:02.065 +03 [2744] LOG: istemciden veri alınamamıştır: unrecognized winsock error 10054
> 2020-07-16 12:29:17.699 +03 [3748] HATA (ERROR): "pg_opclass_oid_index" indeksinde 0 bloğunda beklenmeyen boş sayfa
> 2020-07-16 12:29:17.699 +03 [3748] İPUCU:Lütfen onu REINDEX'leyin.
> 2020-07-16 12:30:17.805 +03 [1456] HATA (ERROR): "pg_opclass_oid_index" indeksinde 0 bloğunda beklenmeyen boş sayfa
> 2020-07-16 12:30:17.805 +03 [1456] İPUCU:Lütfen onu REINDEX'leyin.
> 2020-07-16 12:30:47.363 +03 [7460] ÖLÜMCÜL (FATAL): base/16394/2684 nesnesinin 0 bloğunda geçersiz sayfa
> 2020-07-16 12:31:04.009 +03 [1240] ÖLÜMCÜL (FATAL): base/16394/2684 nesnesinin 0 bloğunda geçersiz sayfa
> 2020-07-16 12:31:11.261 +03 [2396] ÖLÜMCÜL (FATAL): base/16394/2684 nesnesinin 0 bloğunda geçersiz sayfa
>
> Basic translation to English is:
> ERROR: "pg_opclass_oid_index" index 0 block unexpected empty page
> HINT:Please REINDEX it.
> LOG: cannot read fata from client: unrecognized winsock error 10054
> FATAL: base/16394/2684 object 0 block invalid page
>
> When I try to connect server on command line using psql I get same error:
> PS C:\Program Files\PostgreSQL\10 - Kopya\bin> .\psql.exe -U postgres
> psql: ÖLÜMCÜL (FATAL): "pg_opclass_oid_index" indeksinde 0 bloğunda beklenmeyen boş sayfa
> İPUCU: Lütfen onu REINDEX'leyin.
>
> PS C:\Program Files\PostgreSQL\10 - Kopya\bin> .\psql.exe -U postgres -h localhost
> psql: ÖLÜMCÜL (FATAL): "pg_opclass_oid_index" indeksinde 0 bloğunda beklenmeyen boş sayfa
> İPUCU: Lütfen onu REINDEX'leyin.
>
> I am told that some databases in cluster can be accessed, not all. They are accessed from an application and not by admin tools. I do not know how many databases exists in the cluster or their names.
>
> I have tried to dump everything and that also failed:
> PS C:\logs> & 'C:\Program Files\PostgreSQL\10 - Kopya\bin\pg_dumpall.exe' -f dump.bak -U postgres
> pg_dump: [arşivleyici (db)] sorgu başarısız oldu: HATA (ERROR): base/16394/2684 nesnesinin 0 bloğunda geçersiz sayfa
> pg_dump: [arşivleyici (db)] sorgu şu idi: SELECT pg_catalog.set_config('search_path', '', false)
> pg_dumpall: pg_dump "ZEntegre" veritabanında başarısız oldu, çıkılıyor
>
> I wonder if there is anything that can be done here.
>
> Thanks & Regards,
> Ertan
>
>
>
Have you tried to REINDEX as suggested?