You must re-start the server to have this parameter take effect.
example output...

> l compact -B reflect
> 19/11/2000 04:33:47 PM  Compacting database reflect (Reflector)
Stmgr: Write page #17 at position 2BF0  (size: 4096, GroupID: 134217826:1)
Stmgr: Read page #5 at position 1D50  (size: 4096, GroupID: 134217825:1)
BucketWrite: Write Summary bucket #1 at position 2D0  (size: 8192)
BucketRead: Read Nonsummary bucket #1 at position 2F0  (size: 32768)
BucketRead: Read Nonsummary bucket #2 at position 420  (size: 32768)
BucketRead: Read Nonsummary bucket #3 at position 4F0  (size: 32768)
BucketRead: Read Nonsummary bucket #4 at position 570  (size: 32768)
BucketRead: Read Nonsummary bucket #5 at position 610  (size: 32768)
BucketRead: Read Nonsummary bucket #6 at position 6B0  (size: 32768)

...

Compact: Moved Object                    from 4580 to 405A (size = 1054, RRV = 5A6)
Compact: Moved Object                    from 4586 to 40E0 (size = 1054, RRV = 5AE)
Compact: Moved Object                    from 458C to 40E5 (size = 1054, RRV = 5BA)
Compact: Moved Object                    from 4592 to 40EA (size = 1054, RRV = 5C2)
Compact: Moved Object                    from 4598 to 40EF (size = 1054, RRV = 5CA)
BucketWrite: Write Summary bucket #16 at position 2C20  (size: 8192)
Compact: Moved Non-Summary Object        from 459D to 4500 (size = 39979)
BucketWrite: Write Summary bucket #16 at position 2C20  (size: 8192)
Compact: Moved Non-Summary Object        from 463A to 459D (size = 37587)
Compact: Moved Object                    from 46CE to 42F2 (size = 1054, RRV = 5E6)
Compact: Moved Object                    from 46D4 to 42F7 (size = 1168, RRV = 5EE)
Compact: Moved Object                    from 4806 to 4630 (size = 1054, RRV = 616)
Compact: Moved Summary Bucket            17 from 4810 to 4640 (size = 8192)
Compact: Moved Summary Bucket            18 from 4830 to 4660 (size = 8192)
Compact: Moved Object                    from 4A06 to 4635 (size = 1054, RRV = 62E)
BucketWrite: Write Summary bucket #18 at position 4660  (size: 8192)
Compact: Moved Non-Summary Object        from 4D10 to 4B90 (size = 82035)
Compact: Moved Summary Bucket            19 from 4E60 to 4680 (size = 8192)
Compact: Moved Summary Bucket            20 from 4E80 to 46A0 (size = 8192)
Compact: Moved BDB                       from 4EA0 to 4CD1 (size = 0)
Compact: Moved BDB                       from 4EF0 to 4D21 (size = 0)
BucketWrite: Write Summary bucket #19 at position 4680  (size: 8192)
Compact: Moved Non-Summary Object        from 51B1 to 4D71 (size = 66568)
BucketWrite: Write Summary bucket #19 at position 4680  (size: 8192)
Compact: Moved Non-Summary Object        from 52B6 to 51B1 (size = 64998)
BucketWrite: Write Summary bucket #19 at position 4680  (size: 8192)
Compact: Moved Non-Summary Object        from 53B4 to 4E76 (size = 33376)
BucketWrite: Write Summary bucket #19 at position 4680  (size: 8192)
Compact: Moved Non-Summary Object        from 5437 to 52AF (size = 82950)
BucketWrite: Write Summary bucket #20 at position 46A0  (size: 8192)
Compact: Moved Non-Summary Object        from 557C to 53F4 (size = 41485)
BucketWrite: Write Summary bucket #20 at position 46A0  (size: 8192)
Compact: Moved Non-Summary Object        from 561F to 5497 (size = 35577)
BucketWrite: Write Summary bucket #20 at position 46A0  (size: 8192)
Compact: Moved Non-Summary Object        from 56AA to 5522 (size = 35494)
BucketWrite: Write Summary bucket #20 at position 46A0  (size: 8192)
Compact: Moved Non-Summary Object        from 5735 to 55AD (size = 37446)
Compact: Moved Extent Object Page        (#3) from 57D0 to 57A0
Compact: Moved Extent Object Page        (#4) from 57F0 to 5780
Compact: Moved Extent Object Page        (#5) from 5810 to 5760
Compact: Moved Extent Object Page        (#6) from 5830 to 5740
Compact: Moved Extent Object Page        (#7) from 5850 to 5720
Compact: Moved Extent Object Page        (#8) from 5870 to 5700
Compact: Moved Extent Object Page        (#9) from 5890 to 56E0
Compact: Moved Extent Object Page        (#10) from 58B0 to 56C0
Compact: Moved Extent Object Page        (#11) from 58D0 to 56A0
Compact: Moved Extent Object Page        (#12) from 58F0 to 5680
Compact: Moved Extent Object Page        (#13) from 5910 to 5660
Compact: Moved Extent Object Page        (#14) from 5930 to 5640
Compact: Moved Extent Object Page        (#15) from 5950 to 4F20
Compact: Moved Extent Object Page        (#16) from 5970 to 4F00
Compact: Moved Extent Object Page        (#17) from 5990 to 4830
Compact: Moved Extent Object Page        (#18) from 59B0 to 4810
Compact: Moved Extent Object Free Page   from 59D0 to 0 (size = 8192)
Compact: Moved Extent Object Free Page   from 59F0 to 0 (size = 8192)
Compact: Moved Extent Object Free Page   from 5A10 to 0 (size = 8192)
Compact: Moved Extent Object Free Page   from 5A30 to 0 (size = 8192)
Compact: Moved Extent Object Free Page   from 5A50 to 0 (size = 8192)
Compact: Moved Extent Object Free Page   from 5A70 to 0 (size = 8192)
Compact: Moved Object                    from 5A90 to 46C0 (size = 6166, RRV = 69E)
Compact: Moved Extent Object Page        (#0) from 5AB0 to 57C0
Compact: Moved Object                    from 5AD0 to 57E0 (size = 5142, RRV = 6A6)

19/11/2000 04:33:58 PM  Recovery Manager: Assigning new DBIID for
/home/notes/notesr4/reflect.nsf (need new backup for media recovery).
19/11/2000 04:33:58 PM  Finished compacting reflect, 256K bytes recovered (4%)

01. preferences	02. Cache	03. Client_Clock	04. adminp_enable_cascade_design_elements
05. tcp_enableipv6	06. debug(all)	07. logstatusbar	08. enforce_policy_bookmarks
09. converter_log_level	10. Log_Connections

04/09/2006 Notes. Updates and DRCC news

06/07/2005 no.Spam.java - Bonded Sender support

05/10/2005 dcShield - free Spam control for Domino

05/10/2005 no.Spam.java - Greylisting now available

05/09/2005 no.Spam.java - New Features

03/30/2005 dcShield - free spam control for Domino

02/17/2005 no.Spam.java - What's New - Challenge/Respons..

02/02/2005 no.Spam.java - New features