Thread: help: MemoryContextAlloc problem

I have a problem in my postgres production db.
Today pg_dump is failed with the error : MemoryContextAlloc .
I find the row that caused the problem making same query "SELECT * FROM TAB=
LE LIMIT n" .
The row in fact seemed have a varchar very strange.
But few minutes later I have done a select on this row and not there were m=
ore strnge data
 ( in the meantime  there aren't update on the row).
In fact a new pg_dump it has arrived to the term correctly.
As all that is possible?

Thank you for your help!!=