Re: QRPLOBJ Clean Library.

Make sure this is current
Information collected . . . . . . . . . : 04/07/16 04:00:00

Have you tried
PRTDSKINF RPTTYPE(*LIB) OBJ(*ALL) MINSIZE(99999)

Post all of this
% of Size in
Description Disk 1,000,000 bytes
User libraries 13.44 60136.54
User directories 15.81 70717.18
Folders and documents .00 .11
QSYS 2.46 10987.12
Other IBM libraries 2.68 11993.19
Licensed Internal Code 1.56 6958.15
Temporary space 3.08 13783.64
Unused space 60.85 272254.30
System internal objects .07 302.03
Objects not in a library .00 .00
TOTAL 99.95 447132.26

As you can see here I should be spending more time in "User directories"
than in "User libraries". (Domino lpar)

This lpars biggest libraries and objects are:
Library/ % of Size in Last
Object Type Owner Library 1000 bytes Change
QPFRDATA *LIB QSYS 36005826.6 04/07/16
Q095000021 *MGTCOL QCOLSRV 18.17 6543913.0 04/04/16
Q094000021 *MGTCOL QCOLSRV 18.13 6527135.7 04/03/16
Q096000021 *MGTCOL QCOLSRV 18.03 6493581.3 04/05/16
Q097000021 *MGTCOL QCOLSRV 18.03 6493581.3 04/06/16
Q093000021 *MGTCOL QCOLSRV 17.99 6476804.1 04/02/16
QAPMJOBMI *FILE QCOLSRV 4.01 1442500.6 04/07/16
...
QSYS *LIB QSYS 10968910.3
Q890F10068 *JRNRCV QSYS 14.03 1539407.9
Q890F10063 *JRNRCV QSYS 14.02 1538359.3
Q890F10065 *JRNRCV QSYS 14.02 1538359.3
Q890F10067 *JRNRCV QSYS 14.02 1538359.3
Q890F10069 *JRNRCV QSYS 10.71 1175228.4
Q890F10064 *JRNRCV QSYS 8.42 923570.2
Q890F10066 *JRNRCV QSYS 4.59 503681.0
ROUTINES *LIB ROB 9852145.7
...
QAEZD0008O *FILE SSA 2.69 265367.6
QAEZD0009O *FILE SSA 2.69 265367.6
QAEZD0010O *FILE SSA 2.69 265367.6
QAEZD0011O *FILE SSA 2.69 265367.6

Basically all systems stuff.
Rob Berendt