Hello Teddy,
To change the schema of objects (tables, views) is not supported in general.
Instead, you may consider to correct the wrong 'ABAP connect user'.
SAP note 713524 describes the details.
713524 - DB6: Additional information on system copy with DB resources
<Quote>
- Create the correct connect user in the system.
- Set the 'dbs/db6/schema' SAP profile parameter in the instance profile of all SAP instances in the system to this connect user.
- Set the 'dbs_db6_schema' environment variable to the connect user for the <sapsid>adm and db2<dbsid> users.
<End>
Hope it helps.
Kind regards
Maria