LOG usage over 100% - backups failing

[Vijay Havaralu]

Hello every one,
We are running tsm-server ver 3.7.20 on aix 4.3.2 with about 400 gb per day
backup.
Our adsm db-size is close to 100 gb and growing daily.
Almost each day log is overflowing with 100%, all backups fails, and server
recovers & continues
We are already using max 5.4 gb of log and can not increase any more on log
volume.

I appreciate, if anybody has any solutions this problem to reduce log usage
or extend log beyond 5.4gb.

Thanks, vijay.