Using onsmsync to expire backup images

IDS V10.FC5 OS Solaris 10 11/06 I recently noticed that the root dbspace and associated chunks on our production database were filling up with our onbar activities (in the sysutils database). Rather than continue to add addition chunks (raw files) I have read that you can use the onsmsync command to removes all backups that are not in the storage manager catalog from the sysutils database and emergency boot file. We run a policy through netbackup that executes a level 0 archive every night and another policy that moves the data from disk to tape. We only have a two week retension period. Adding another chunk is not an issue, the current root dbspace is only 290MB. Chunks address chunk/dbs offset size free bpages flags pathname 1901b0028 1 1 0 45000 7 PO-B /chunks/root 19148eb88 22 1 0 45000 25 PO-B /chunks/root2 19148f028 24 1 0 45000 1701 PO-B /chunks/root3 Dbspaces address number flags fchunk nchunks pgsize flags owner name 1901afe78 1 0x40001 1 3 2048 N B informix dbs_root oncheck -pe Chunk Pathname Pagesize(k) Size(p) Used(p) Free(p) 24 /chunks/root3 2 45000 43299 1701 Description Offset(p) Size(p) ------------------------------------------------------------- -------- -------- RESERVED PAGES 0 2 CHUNK FREELIST PAGE 2 1 sysutils:'informix'.bar_obj_idx 3 5376 sysutils:'informix'.bar_object 5379 1024 sysutils:'informix'.bar_obj_idx 6403 1792 sysutils:'informix'.bar_instance 8195 512 sysutils:'informix'.bar_act_idx 8707 32 sysutils:'informix'.bar_obj_idx 8739 1792 sysutils:'informix'.bar_object 10531 1024 sysutils:'informix'. 102_9 11555 64 sysutils:'informix'.bar_instance 11619 512 sysutils:'informix'. 102_10 12131 32 sysutils:'informix'. 101_4 12163 32 sysutils:'informix'. 103_14 12195 64 sysutils:'informix'.bar_act_idx 12259 32 sysutils:'informix'.bar_obj_idx 12291 1792 sysutils:'informix'.bar_instance 14083 512 sysutils:'informix'. 102_9 14595 64 sysutils:'informix'.bar_action 14659 128 sysutils:'informix'.bar_object 14787 1024 sysutils:'informix'. 102_10 15811 64 sysutils:'informix'. 101_4 15875 32 sysutils:'informix'.bar_act_idx 15907 64 sysutils:'informix'.bar_obj_idx 15971 1792 sysutils:'informix'. 103_14 17763 64 sysutils:'informix'.bar_instance 17827 1024 sysutils:'informix'. 101_4 18851 64 sysutils:'informix'. 102_9 18915 64 sysutils:'informix'.bar_action 18979 128 sysutils:'informix'.bar_obj_idx 19107 1792 sysutils:'informix'.bar_object 20899 1024 sysutils:'informix'. 103_14 21923 64 sysutils:'informix'. 102_10 21987 64 sysutils:'informix'.bar_instance 22051 1024 sysutils:'informix'.bar_act_idx 23075 64 sysutils:'informix'.bar_obj_idx 23139 1792 sysutils:'informix'. 102_9 24931 64 sysutils:'informix'.bar_action 24995 128 sysutils:'informix'.bar_object 25123 1024 sysutils:'informix'. 101_4 26147 64 sysutils:'informix'. 103_14 26211 64 sysutils:'informix'.bar_obj_idx 26275 1792 sysutils:'informix'. 102_9 28067 64 sysutils:'informix'. 102_10 28131 64 sysutils:'informix'.bar_action 28195 128 sysutils:'informix'.bar_instance 28323 1024 sysutils:'informix'.bar_act_idx 29347 64 sysutils:'informix'.bar_object 29411 1024 sysutils:'informix'.bar_obj_idx 30435 1792 sysutils:'informix'. 103_14 32227 64 sysutils:'informix'. 101_4 32291 64 sysutils:'informix'. 102_9 32355 64 sysutils:'informix'.bar_obj_idx 32419 3584 sysutils:'informix'.bar_action 36003 128 sysutils:'informix'.bar_instance 36131 1024 sysutils:'informix'.bar_object 37155 1024 sysutils:'informix'. 102_10 38179 64 sysutils:'informix'. 103_14 38243 64 sysutils:'informix'.bar_act_idx 38307 64 sysutils:'informix'. 102_9 38371 64 sysutils:'informix'.bar_action 38435 128 sysutils:'informix'. 101_4 38563 64 sysutils:'informix'. 103_14 38627 64 sysutils:'informix'.bar_object 38691 1024 sysutils:'informix'.bar_obj_idx 39715 3584 FREE 43299 1701 Total Used: 43299 Total Free: 1701 Can someone advise if it is safe to use onsmsync to clean up or should I continue to add more space. Will this cause any problems wrt restoring data since we run a full backup every night?