What to do if the LFDS Detection Tool finds an LFDS database?
The following are the steps needed to migrate from LFDS on C.10.xx. There are a
few exceptions, which apply on 7.5 only. These recommendations describe using HP
supplied utilities.
If you need set(s) >4 GB and you can manage without DDX/MDX on any set >4GB then you should convert to using Jumbo instead of
LFDS:
- Back up your database
- DBUNLOAD database
- Install C.10.10 LFDS disable patch TIXMXW7 (if not already installed)
- Alter the schema file to
- remove any $CONTROL LFDS statement
- include $CONTROL JUMBO before the specification of any sets >4GB.
- remove DDX/MDX specification for any set >4GB
- Purge the database with DBUTIL
- Recreate the database from the schema file using DBSCHEMA, DBUTIL
- Reload the data with DBLOAD.
- Back up the new copy of your database.
If there is really no need for any set to be >4GB then you may recreate the database without Jumbo or
LFDS:
- Back up your database
- DBUNLOAD database
- Install the C.10.10 LFDS disable patch TIXMXW7 (if not already installed)
- Alter the schema file
- change maximum capacities so that no set is >4GB
- remove any $CONTROL LFDS statement
- Purge the database with DBUTIL
- Recreate the database from the schema file using DBSCHEMA, DBUTIL
- Reload the data with DBLOAD.
- Back up the new copy of your database.
Exceptions
LFDS created on C.10.03 but Current Version not C.10.03
C.10.03 was the version shipped on base 7.5. It was never available on any other release.
If you have a LFDS created on C.10.03 and you are currently running C.10.04
and there is data beyond
4GB - DBUnload may not work. This is because the LFDS structure changed, and a C.10.04 or later
DBUnload may not be able to read beyond 4GB. If this issue was experienced with LFDS on C.10.03,
rebuilding on a later version should have been recommended. So this situation should indeed be exceptional.
There is no way to distinguish internally, via the root file, between an LFDS database created on
C.10.03 and one created on a later C.10.xx version.
If the creation date of your LFDS database is earlier than the date any Image patch was
installed on your 7.5 then you could be in this situation. The patch install date should
be available from hpswinfo.pub.sys.
If you are in this situation then the database would need to be unloaded on a C.10.03 system,
before following step 2 onward in the above instructions.
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