Sql2005 migration utf8mb4 problem

[gan li]

I really need help for Sql2005 migration problem.

MY GOAL:
To migrate many Sql2005 DataBases with data to a MySQL version 5.6 using Workbench.

Sql2005 DataBases COLLATE is Chinese_PRC_CI_AS.
MySQL Workbench Version 6.0.2 beta.


The Sql2005 DataBases contain some 4 bytes UTF-8.

When Mysql use utf8 collate, Get Error: during charset conversion of wstring: No error.

So i select mysql collate utf8mb4.

+--------------------------+--------------------+
| Variable_name | Value |
+--------------------------+--------------------+
| character_set_client | utf8mb4 |
| character_set_connection | utf8mb4 |
| character_set_database | utf8mb4 |
| character_set_filesystem | binary |
| character_set_results | utf8mb4 |
| character_set_server | utf8mb4 |
| character_set_system | utf8 |
| collation_connection | utf8mb4_general_ci |
| collation_database | utf8mb4_general_ci |
| collation_server | utf8mb4_general_ci |
+--------------------------+--------------------+

modify ther db_mssql_migration_grt.py

def migrateCharsetCollation(self, state, charset, collation, source_object, target_object):
if collation:
state.addMigrationLogEntry(0, source_object, target_object,
'Collation %s migrated to utf8_general_ci' % (collation))
return '', 'utf8_general_ci'

return charset, collation


as:

def migrateCharsetCollation(self, state, charset, collation, source_object, target_object):
if collation:
state.addMigrationLogEntry(0, source_object, target_object,
'Collation %s migrated to utf8mb4_general_ci' % (collation))
return '', 'utf8mb4_general_ci'

return charset, collation

When migrate also get Error: during charset conversion of wstring: No error.


How to migrate Sql2005 DataBases which have some 4 bytes UTF-8 to a MySQL?

Thanks and regards.