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From Kathey Marsden <kmars...@Sourcery.Org>
Subject Re: Regarding future compability
Date Thu, 26 Aug 2004 17:18:08 GMT
Hash: SHA1

Nils Nordman wrote:
| Hi there,
| I've got a question regarding the future upgrade path of Derby. I've
| read elsewhere that one can't in-place upgrade from the cloudscape beta,
| something which is understandable given the name change, etc.
| However, can I expect to be able to in-place upgrade to future versions
| of Derby, if the initial databases are created by the newly checked-in
| code?
| Cheers,

Barring dramatic community decisions to the contrary, yes, you can
expect to be able to in-place upgrade to future versions of  Derby if
the databases are created by the newly checked-in code.

When you boot derby with a new version it will perform "soft upgrade".
After a soft upgrade you can still go back to your old version, but you
cannot use any of the new features.  if you connect with the connection
attribute upgrade=true, you can use the new features but you can no
longer go back to the old version.

In the past, Cloudscape has never supported in-place upgrade from a beta
version even in thecases where there are not such drastic changes.
Customers participating in a beta, upgrade a copy of their database to
test with and don't upgrade their production database until the final
version comes out.


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