Regular issues faced on postgres 8.1

Server Details :

Environment : RHEL 4
Postgres Version :Postgres 8.1
  1.. Missing chunk number 0 for toast value : This case is generated due t=
o corruption of toast table of a particular table.Many times reindexing the=
 toast table solves the problem.=20
  2.. Cannot insert a duplicate key into unique index : On analysing this c=
ase we found that  duplicate rows  get automatically generated , how-ever t=
he "oids " still remains different (In some of the cases, oids also same). =
 If a there is a primary key constarint on a column , then  this condition =
gets violated and start throwing error.=20
  3.. Missing file in clog directory : While doing operations on some recor=
ds, Error comes that an offset of clog file is missing. After analyzing it =
is found that file itself is missing. To resolve this we need to create bla=
nk files padded with zero, resulting in data loss.=20
 Note : The above given problems are mostly on the tables which have high f=
requency of update.=20=20

Kindly help us in resolving these issues, Whether these are bugs resolved i=
n latest versions of postgres, If so than in which version, above stated pr=
oblems are resolved.
=20



Regards
Kunwar Anjani Tyagi
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