Versions 1.7 and later of z/OS support mixed-case passwords with the incoming login requests. This feature can be used in both two-tier and three- tier configurations with Mainframe Connect Server Option for CICS and DirectConnect for z/OS Option versions 15.0 ESD #2 or later.
The SYBTPSEC parameter MIXEDCASEPW controls the use of mixed-case passwords on the Server Option side. A value of N (the default) indicates that the listener will convert all incoming passwords to uppercase. A value of Y will leave the passwords in mixed case.
Do not set MIXEDCASEPW=Y unless
the z/OS Security Manager is set to use mixed-case passwords.
In the three-tier environment, the DirectConnect for z/OS Option uses the UpperCasePassword configuration property to set the case:
Yes – (the default) converts the password to uppercase.
No – passes the password as entered—whether uppercase, lowercase, or mixed case. In fact, you must set it to No to allow lowercase or mixed case.
The UpperCasePassword configuration property is found in the Target Interaction section, for DB2 Access Service only.
