Two weeks ago we did an upgrade from postgresql 7.3.2 to 7.4.1.
No we have the problem that pg_dump does not finish. We get the following error message:
pg_dump: lost synchronization with server: got message type "5", length
842281016
pg_dump: SQL command to dump the contents of table "aggr_stddev_hour" failed:
That's interesting. What are the column data types in that table? What character set encoding are you using? Can you do a dump if you select the dump-data-as-INSERT-commands option?
Tabelle »messungen.aggr_stddev_hour« Spalte | Typ | Attribute --------+--------------------------+----------- id | integer | not null von | timestamp with time zone | not null wert | double precision | counts | integer | not null Indexe: »idx_aggr_stddev_hour_id_von« eindeutig, btree (id, von)
Encoding: LATIN9
The error does not occur always and not always with the same table. However, the error occurs only on that kind of aggregation tables. There is a cron-job keeping the tables up to date, starting all 10 minutes. The job does delete and inserts on the table. Could this somehow block the dump process? Normally it should not?
The database size is about 10 GB.
How big is the particular table?
The table has 9 000 000 entries.
Stefan
-- ----------------------------- Dr. Stefan Holzheu Tel.: 0921/55-5720 Fax.: 0921/55-5799 BITOeK Wiss. Sekretariat Universitaet Bayreuth D-95440 Bayreuth -----------------------------
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