SQL log file size is extending rapidly

Hello All,

We are using ECC 6.0, our database is SQL 2005 & operating system is Windows NT 4x AMD64 L.

Our database log file size is increasing rapidly, now its size is more than the all 4 data files (near about 300gb).

Last week I tried to shrink log file but it didn't worked.

Now less space is remained on disk, please help me.

Now the system is started giving dump at the time of log in, & the dump is like "START_CALL_SICK ".

I am attaching dump error text file.

Please help why is this happening.

Thanks in advance

Mahendra