Re: [COMMITTERS] pgsql-server: Rearrange pg_subtrans handling - Mailing list pgsql-hackers

Greg Stark wrote:

> It's only allowed when the transaction is in READ UNCOMMITTED 
> isolation level.
>
>Something Postgres doesn't currently support. In fact I'm not aware of any SQL
>database that supports it, though I'm sure there's one somewhere.
>
>  
>
FYI - DB2 supports this isolation level, I don't know of any others (tho 
Informix is a possibility).

regards

Mark