expdp taking more time than expected

Hi All,

I am facing the time delay on expdp. General time it takes <20min but from two days it is taking more than 40min.

Appreciate if anyone can help me on this.

Sharing the past details with db sizes on everyday - FYR

DATE Start time End time Elapsed time (HR:MM)
DATE SIZE 1-Dec-13 6:26 6:43 0:17
13-12-01 225.22 2-Dec-13 23:10 23:25 0:15
13-12-02 228.41 3-Dec-13 23:10 23:25 0:15
13-12-03 228.52 4-Dec-13 23:10 23:29 0:19
13-12-04 228.6 5-Dec-13 23:10 23:25 0:15
13-12-05 228.64 6-Dec-13 23:10 23:22 0:12
13-12-06 248.46 7-Dec-13 19:00 19:14 0:14
13-12-07 246.56 8-Dec-13 - -  
13-12-08 246.56 9-Dec-13 23:10 23:31 0:21
13-12-09 246.65 10-Dec-13 23:10 23:27 0:17
13-12-10 242.47 11-Dec-13 23:10 23:32 0:22
13-12-11 242.69 12-Dec-13 23:10 23:33 0:23
13-12-12 242.79 13-Dec-13 23:10 23:32 0:22
13-12-13 242.83 14-Dec-13 19:00 19:24 0:24
13-12-14 242.99 14-Dec-13 22:10 22:31 0:21