| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Greg <grigorey(at)yahoo(dot)co(dot)uk> |
| Cc: | pgsql-novice(at)postgresql(dot)org |
| Subject: | Re: Extended Query Protocol Question |
| Date: | 2010-07-13 14:55:35 |
| Message-ID: | 28875.1279032935@sss.pgh.pa.us |
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| Lists: | pgsql-novice |
Greg <grigorey(at)yahoo(dot)co(dot)uk> writes:
> Hi all. I cant get my head around Extended Query message flow in Frontend/Backend protocol v3.
>> From documentation I understand that I have to sent Parse, Bind and Execute messages and expect responses: ParseComplete & ReadyForQuery for Prase, BindComplete & ReadyForQuery for Bind and as for Execute reponse I should get DataRow(s).
> so far I'm getting proper reponses for Prase & Bind but when I send Execute message I get an error "ERROR C34000M portal "MyPortal" does not exist F.\src\backend\tcop\postgres.c L1810Rexec_execute_message'.
> Why this message is been displayed after I get ParseComplete & BindComplete messages?
The two most likely explanations I can think of are
(1) you didn't give the same portal name in Bind as in Execute; or
(2) you did something between those two commands that ended the
transaction and thus caused the portal to be closed.
regards, tom lane
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