transaction log for database 'DB' is full??

Hi All,

I am new to SQL server. I am using it as my application back end.

Can anyone help how to resolve the following issue??

I am getting following error while running the application.

"Message   : {The transaction log for database 'DB' is full. To find out why space in the log cannot be reused, see the log_reuse_wait_desc column in sys.databases"    

I tried with shrink option. it didn't worked.

How can i delete total transaction log?? and what happens if i delete??

Now my DB size is 50 Gb. i created one sample DB and imported the data from my regular DB (50 Gb). new DB took 2 Gb only for same no.of records.

What is the difference between two DB's?? can anyone pls clarify??

Thanks and Regards,

Naidu