> If the normal default_transaction_isolation = read committed and all
> transactions that require serializable are explicitly marked in the
> application then there is no way to turn off SSI without altering the
> application. That is not acceptable, since it causes changes in
> application behaviour and possibly also performance issues.
Performance, perhaps. What application behavior changes? Less
serialization conflicts?
> We should provide a mechanism to allow people to upgrade to 9.1+
> without needing to change the meaning and/or performance of their
> apps.
That ship has sailed.
--
Greg Sabino Mullane greg(at)endpoint(dot)com
End Point Corporation
PGP Key: 0x14964AC8