Hi Ramesh,
well, ok, in that case it seems that the table compression of your Oracle system yields better compression results.
For the SAP HANA side you can of course check whether the compression is set up optimally (UPDATE <table> WITH PARAMETERS ('OPTIMIZE_COMPRESSION' = 'FORCE')).
A compression factor of 2,8 (140:50) is actually not too impressive.
Another possible explanation for the size in SAP HANA could be that there are large hidden columns on the table that had been created in SAP HANA.
See my presentations Further Playing with SAP HANA and Playing with SAP HANA on that.
- Lars