IBM Data Virtualization Manager

IBM Data Virtualization Manager for z/OS provides virtual, integrated views of data that resides on IBM Z. It enables users and applications to have read or write access to IBM Z data in place, without having to move, replicate, or transform the data.

watsonx.data on IBM Software Hub

watsonx.data Developer edition

IBM Data Virtualization Manager

Configure the following details for IBM Data Virtualization Manager:

Field Description
Display name Enter the database name to be displayed on the screen.
Hostname Enter the Hostname.
Port Enter the Port number.
Username Enter the Username.
Password Enter the Password.
Port is SSL enabled Use the toggle switch to enable or disable SSL connection. If enabled,

i. The Upload SSL certificate (.pem, .crt, .cert or .cer) link is enabled.

ii. Click the Upload SSL certificate (.pem, .crt, .cert or .cer) link.

iii. Browse the SSL certificate and upload.

Validate certificate Use the toggle switch to validate whether the SSL certificate that the host returns is trusted or not.
Hostname in SSL certificate Provide the hostname in SSL certificate.
Connection status Click the Test connection to test the data source connection. If the data source connection is successful, a success message appears.
Note: If you face issues with the test connection by using SSL, try testing again without certificate validation. Sometimes, certificate validation might fail to work.

Console UI

Associate catalog

Console UI

Select the checkbox to associate a catalog to the data source. This catalog is automatically associated with your data source and serves as your query interface with the data stored within.
Catalog name / Name

  • Console UI

    Catalog name: Enter the name of the catalog.

  • Platform UI

    Name: Enter the name of the database associated with your data source. The database serves as your query interface with the data stored within.
Create Click Create to create the database.

Limitations for SQL statements

  • For the database-based catalogs, CREATE SCHEMA, CREATE TABLE, DROP SCHEMA, DROP TABLE, DELETE, DROP VIEW, ALTER TABLE, and ALTER SCHEMA statements are not available in the Data manager UI.

Limitations for data types

  • When the fields of data type REAL have 6 digits or more in the decimal part with the digits being predominately zero, the values when queried are rounded off. It is observed that the rounding off occurs differently based on the precision of the values. For example, a decimal number 1.654 when rounded to 3-digits after the decimal point are the same. Another example is 10.890009 and 10.89000. It is noticed that 10.89000 is rounded to 10.89, whereas 10.89009 is not rounded off. This is an inherent issue because of the representational limitations of binary floating point formats. This might have a significant impact when querying involves sorting.