SAP Upgrade Fails

Hi Experts,

I'm trying to upgrade my database from 8.81 PL6 to 8.82 PL7, but it always fails in ADO1 table. As I check the log it indicates that the transaction log in full. Here's the excerpt of the error log " table=ADO1, qurStr=UPG_UpdateOneTable() - error in GetFromTempTable() file:㩄摜灥瑯䉜单䉍䉟就⸸㈸剟䱅卜佂㡜㠮弲䕒屌灁汰捩瑡潩屮扏䵪牧停䝏湥㄰挮 line#1856, errString=[Microsoft][SQL Server Native Client 10.0][SQL Server]The transaction log for database 'DBName' is full. To find out why space in the log cannot be reused, see the log_reuse_wait_desc column in sys.databases "

Anybody how can I resolve this. Thanks.

Regrads,
Lean