Well, if you are using Agile 184.108.40.206 or above and do not use Agile PLM Data Mart/BI then consider truncating the "A_DW_TXN_LOG" table.
This table records all DML actions and can get rather large. So for those not using DM, truncating this table can free up a lot of disk space, especially in larger databases.
For more information on how to truncate this table please review the following document:
Can the "A_DW_TXN_LOG" Table be Truncated in the Agile Product Lifecycle Management (PLM) Database? (Doc ID 828904.1)