With the insert, there was no primary key or other indexes. So i don't know the impact of it and I did not test it.   ... View more

For me in version 2.6 I have following experiences, where the client is Windows and the server Linux: When you have a lot of columns, you have to decrease the setting for bulk_row_count to 25000 or even less. This works for both Insert and Update. You should not enable bulkload in the driver and WireProtocolMode should be 2. You have to check the amount of records after an insert, because in some cases the job went well, but not all records were inserted! Test it on both client and server, for me this are different OS ... View more