TDLOAD error RDBMS Warning: 6813 Numeric overflow in internal counters. - response (1) by dnoeth

The number of rows returned is actual number of rows returned, modulo 2^32.

5259745852 MOD 2**32 = 964778556 :-)
 
Regarding the smaller size, e.g. this might be caused by:
- copy to an appliance with block level compression
- less secondary indexes 
 
Dieter