Re: Socket command type I unknown

Joel Richard <postgresql(at)joelrichard(dot)com> writes:
> ... we occasionally get the following message in our apache log
> file. I'm looking for information on what it means:

> DBD::Pg::db selectrow_array failed: FATAL: Socket command type I
> unknown

This looks to me like a protocol-level incompatibility: probably the
client code is sending data in a slightly different format than the
server is expecting, or one side or the other is off-by-one about
message lengths, or something like that. One way or another the
server is receiving an 'I' when it wasn't expecting that.

I'm not aware of any such bugs on the server side in 7.3.4. What I
suspect is a problem on the DBD::Pg side, where you did not specify
what version you are using ... but if it's recent, it probably thinks
that talking to 7.3.4 is a legacy problem ...

regards, tom lane