DB6CONV/DB6 - Is there a way to reuse existing compression dictionary

As some of you probably know, DB6CONV handles compression by retaining the Compression flag while performing the table move , but unfortunately not the compression dictionary. This is causing some issues for tables to increase in size because of the way new dictionary gets built based on sample 1000 rows. Please see an example below where the Data Size of a compressed table increased after the tablemove.
For table SAPR3. /BI0/ACCA_O0900, please see the below statistics.
Old Table:
Data Size = 10,423,576 KB
Index Size = 9,623,776 KB
New Table (both data and index) with Index Compression (Moved using DB6CONV, took 1 hr for 100 million row table):
Data Size = 16,352,352 KB
Index Size = 4,683,296 KB
Reorg table with reset dictionary (By DB2 CLP takes 1hr and 32 Min)
Data Size = 8,823,776 KB
Index Size = 4,677,792 KB
We are on DB2 9.5 and will soon be migrating to DB2 9.7. In order to use the reclaimable table space feature that comes with DB2 9.7, We are planning on creating new tablespaces ( especially for objects like PSA/Change logs in BW) and then move the compressed tables after enabling index compression, but the DB6CONV is not going to be the right tool based on our experience.
Is there a way for DB6CONV or DB2 to reuse an existing compressed dictionary of the source table and reuse it when it performs a table move to a new tablespace.
Thanks,
Raja

hi raja,
no, DB6CONV cannot reuse the existing compression dictionary - this is in general not possible.
BUT: the good news is, that the next version V5 of DB6CONV will (amongst other new features) handle compression in a much better way! like R3load and online_table_move the compression dictionary will then be created based on (if possible) 20MB of sampled data ensuring optimal compression.
this new version will become generally available within the next few weeks.
regards, frank

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