Hi folks,

 

we´re running PostgreSQL 8.4.7 for an CRM System on a Linux machine. Database 
contains about 540 tables with summary about 2.5 million records. Since this 
weeks the backup stops with an error message always at the same table. It´s 
irrelevant what tool we use to backup (pgAdmin III, pg_dump from a windows 
client; backup on the Linux machine directly, ...), error stays the same.

On Windows pg_dump reports:

pg_dump: Dumping the contents of table "gdvaus" failed: PQgetCopyData() failed.

pg_dump: Error message from server: server closed the connection unexpectedly

            This probably means the server terminated abnormally

            before or while processing the request.

pg_dump: The command was: COPY iwm.gdvaus (nvirtnr, ngesell, ngdvsatz, 
nimplauf, ngdvteilsatz, cagentur, cgesellnr, cpolnn, csatzart, cspartenr, 
iadresskz, ifolgenr, nfiliale, nfilaender, msatz) TO stdout;

pg_dump: *** aborted because of error

 

The log contains the following lines:

2011-04-05 17:57:35 CEST STATEMENT:  COPY iwm.gdvaus (nvirtnr, ngesell, 
ngdvsatz, nimplauf, ngdvteilsatz, cagentur, cgesellnr, cpolnn, csatzart, 
cspartenr, iadresskz, ifolgenr, nfiliale, nfilaender, msatz) TO stdout;

2011-04-05 17:57:35 CEST LOG:  SSL-error: unsafe legacy renegotiation disabled

 

While searching for a solution to the first notification "PQgetCopyData() 
failed" I found some notes about a possible OOM Kill so I monitored RAM Usage 
during the backup and found out that this is not the reason; none of the 
PostgreSQL processes catches more than about 15 MB and there´s enough free 
Memory left.

Furthermore, I found a hint to the SSL connection problem. It was recommended 
to add the parameter ssl_renegotiation_limit with value 0 to postgresql.conf to 
turn off the SSL renegotiation. As I do this, database system will not start 
again.

 

Does anyone have some more hints for me?

 

Thanks a lot for all responses.

 

Greetings

 

Michael

 


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