> On 2012/06/19 09:07, Thomas Steinmaurer wrote:
>>> I've a database on firebird 2.1.1 32bits and i want to migrate to
>>> firebird 2.1.4 64bits. Do I need a backup and restore database for
>>> porting to 2.1.4 64bits?
>> No.
>>
>>> If i move from 2.1.4 64bits to 2.1.4 32bits i need to do backup and
>>> restore?
>> No.
>>
>> Mind you, if you are using UDFs, you need libraries compiled for 64-bit.
>>
>>
>> Regards,
>> Thomas
>>
>>
>>
> Thomas I differ from you. I know according to the manual its the same
> ODS, but in practice I found that sometimes I could not open the
> database when switching between 32/64.

You can't mix 32 and 64-bit Firebird processes accessing the same
physical database, so e.g. under Firebird 2.5, you can't access your
database with a 32-bit Firebird Embedded client while it's in use by a
regular regular Firebird 64-bit server process.

To date I could not found out

> why, as I use no UDF's and standard supperserver installations. So I
> would recommend to go with backup/restore.

Sure, a backup/restore cycle never hurts, but I haven't encountered
problems so far when simply copying a physical database file for
Firebird 32/64-bit access.


Regards,
Thomas