After importing tables from DB2 they do not show up on the relational model or anywhere in the design?

Question

I'm trying to reverse engineer a data warehouse that is on DB2 into Oracle Data Modeler. When I choose to import from data dictionary I can view the schemas and tables but after I select the needed ones they do not show up in the relational model. I found the following errors in the logging page:

• MOHStorageGroupDB2.extract(): DB2 SQL Error: SQLCODE=-204, SQLSTATE=42704, SQLERRMC=SYSIBM.SYSSTOGROUP, DRIVER=4.21.29

• MOHTablespaceDB2.extract(): DB2 SQL Error: SQLCODE=-204, SQLSTATE=42704, SQLERRMC=SYSIBM.SYSTABLESPACE, DRIVER=4.21.29

• MOHDatabaseDB2.extract(): DB2 SQL Error: SQLCODE=-204, SQLSTATE=42704, SQLERRMC=SYSIBM.SYSDATABASE, DRIVER=4.21.29

• MOHSequenceDB2v80.extract(): DB2 SQL Error: SQLCODE=-206, SQLSTATE=42703, SQLERRMC=SCHEMA, DRIVER=4.21.29

• MOHProcedureDB2v80.extract(): DB2 SQL Error: SQLCODE=-206, SQLSTATE=42703, SQLERRMC=SCHEMA, DRIVER=4.21.29

• MOHTableDB2v80.generate(): DATAWAREHOUSE.DIMSTUDENTLEVEL

• null at com.oracle.jdeveloper.nbwindowsystem.NbEditorContainer.getURL (NbEditorContainer.java:1019)

Answer 1

Your Oracle Data Modeler tries to access DB2 for Z/OS specific system catalog tables like SYSIBM.SYSDATABASE, which are not available in Db2 for LUW databases.

These are different products. So, you should make your tool work with namely the Db2 for LUW product.

BTW,
You do see the system catalog tables in the SYSIBM schema in Db2 for LUW (like SYSIBM.SYSTABLESPACES, but not SYSIBM.SYSTABLESPACE as in DB2 for Z/OS), but it's always advisable to use system catalog views in the SYSCAT schema based on tables in the SYSIBM schema, instead of using SYSIBM tables directrly in Db2 for LUW.