All multi-source models share the same metadata ----------------------------------------------- Key: TEIID-2251 URL: https://issues.jboss.org/browse/TEIID-2251 Project: Teiid Issue Type: Sub-task Components: Query Engine, Server Affects Versions: 8.1, 8.2 Environment: Win XP pro, JBoss AS 7.1.1, JDBC drivers: system-i (jt400 7.8) , MySQL (connector/j 6.5.1) Reporter: Dave Stannard Assignee: Steven Hawkins Sharing the same metadata can cause issues, for heterogeneous sources or when attempting to use multi-source for multiple schemas, as described below: Teiid issues queries with the catalog and schema of the the primary source. This gives invalid results for all the other sources. If the non-primary source connection(s) have authority to access the primary's catalog/schema then duplicated rows are returned to the client. If it does *not* have authority then an error results. Note: In MySQL this effect can be mitigated by setting useCatalogName=false. This seems to be because the JDBC4DatabaseMetaData.getTables() method does not return a schema; so suppressing the catalog is enough. For the System-I whose equivalent getTables() method returns a catalog and schema, I couldn't find a workaround.