Database upgrade not possible; user tables have table ids in system table range

Error constant SQLE_USER_TABLES_IN_SYSTEM_RANGE
ODBC 2 State 08004
ODBC 3 State 08004
Severity 21
SQLCODE –827
SQLSTATE 08W58
Sybase error code 13833
Probable cause

An attempt to upgrade a database failed. The RowGenerator table is not owned by user dbo.