Re: ontape/ondatartr restores

In article <327A4654.4BBD@netcomuk.co.uk>, ntruby@netcomuk.co.uk writes >It's well known that OnLine demands that a restore requires the original >chunks to be available, or at least the same symbolic links. > Correct. >But why is this? I can't understand why, since the physical location of >pages is unimportant. The important thing is the relative address of >each page wrt the start of its dbspace. > But you have to define where the dbspace is stored. Ultimatly you have to define the phyiscal location of the data as operating system requests to access data need the physical location. It's easier to define this within the database rather than have a seperate configuration file. This enables you to easily keep the two in sync and stops people trying to change the locations outside of Online. >Other DBMSs, e.g. Adabas, work entirely on relative address blocks >(pages). This makes transfer of data between servers, or between prod >and dev on the same server, much easier. > So how do you define the physical location of data with these? >Neil Truby >Chase Manhattan Bank >Bournemouth, UK -- David Williams