Peter Mount wrote:
...
> Yes, there is a problem with multiple statements and transactions on the
> same connection when it comes to thread safety.
>
> The problem as I see it is two fold.
>
> 1: How to deal with two statements within one transaction. Related to this
> is the metadata methods that issue queries, how to deal with them while
> within a transaction.
>
> 2: Currently the JDBC Specs only have transactions supported at the
> Connection level, so I can't see how they thought that Statements could
> possibly run within their own transactions, unless they thought that a
> workaround of this is the use of batches.
Ah, that probably explains why I've seen "tuple arrived before metadata"
messages when I've got several apps talking through CORBA to a java app
that connects to postgres. Do I need to synchronize both inserts and
queries at the java app level to prevent this? (I was hoping that
the BEGIN/END block in a transaction would be sufficient, but this makes
it sound as though it isn't.)
--
Steve Wampler- SOLIS Project, National Solar Observatory
swampler@noao.edu
