I have a application using Cloudscape database(version5.6).The Cloudscape Database size is 73.1 Giga bytes.After migrating the database from Cloudscape to derby(Cloudscape10.0) i have noticed the following
 1. The migrate derby Database size is reduced to 50.1 Giga bytes(which was 73.1GB with cloudscape) 
 2. My Application become dead slow at the DB interaction layer
I have used IBM's migratetoderby.jar for my migration. Could anyone help me out what went wrong during migration
1. Why the Database size was reduced ?
2. Whether there is any upper limits during migration process?
3. Why Application get slowdown during Database interaction layer?which was good before migration
Please help me out by providing you inputs
Thanks & Regads,
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