Update Very Slow on HANA Database

Hi Folks,

Recently we migrated to HANA in our BW system. I am having a program which does an update on a table.

When I write MODIFY statement program dumps with exception DBSQL_INTERNAL_ERROR ( Internal Kernel Error ).

MODIFY zdata FROM TABLE @lt_data.

Then I changed the Modify statement to Update and it stopped dumping.

UPDATE zdata FROM TABLE @lt_data.

But came upon a new issue, just to update 11000 records its taking ages. Don't know what's wrong here. Before migrating to HANA same Update used to be lightening fast.

If I am doing anything wrong your inputs will be appreciated.