Re: Loosing connection with the database

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От Poul Møller Hansen
Тема Re: Loosing connection with the database
Дата
Msg-id 424ED656.90909@pbnet.dk
обсуждение исходный текст
Ответ на Re: Loosing connection with the database  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: Loosing connection with the database
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2005-04-02 00:09:01 ERROR:  invalid string enlargement request size 
1358954492 
2005-04-02 00:09:01 WARNING:  AbortTransaction and not in in-progress 
state    
2005-04-02 00:09:01 FATAL:  invalid frontend message type 82      
This indicates the client code didn't follow the protocol properly,
ie, it sent garbage where a message length word ought to be.

This sort of thing has been seen to occur when multiple client-side
threads try to use the same database connection without proper locking
to ensure only one thread uses it at a time.  See for example
http://archives.postgresql.org/pgsql-hackers/2004-09/msg00104.php
		regards, tom lane 
This is exactly what I am doing. Must admit I haven't considered that as an issue.
For performance reasons I suppose one database connection per client are preferred
rather than using synchronized on the db class ?

Thanks a lot for bringing it to my attention

BR, Poul

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