Dezhi Systems support site

Dear administrators,
I have applied the User ID in this website named IVANSAM , with the password longer the 7 characters. And i can use this user ID and the password to log on this websit. However i can't log on TSO in the machine installed ZOS by using this user ID and password. I find the machine only have 7 blank available for password while my password is longer than 7 characters. SO I don't know how to log on the machine using this user ID.
Please help me! Thinks

I do not understand the problem you claim to be having. A TSO userid has a maximum length of 7 bytes. I think this was a design issue back in the 1960s when TSO was first designed. The password has a maximum length of 8 bytes in the Fandezhi system. I know for a fact that 8 byte passwords work fine: the password I presently use -- in fact all the passwords I have ever used to access the Fandezhi z/OS system -- contained 8 bytes.

The userid and password you use to use this web site have nothing to do with the userid and password used to access the Fandezhi z/OS system.

There were 2 reasons for 7 byte userids in the 1960s. The userid data base mechanism used for userid validation only had 7 bytes available for the userid. In addition, a TSO control area called the PSCB (Protected Step Control Block) has just 7 bytes available for the userid. The PSCB is still in use today, and the userid data area is still just 7 bytes. See SYS1.MACLIB(IKJPSCB). Another TSO data area called the UPT (User Profile Table, SYS1.MACLIB(IKJUPT)) added a field somewhat later for what amounts to the userid - the default high level qualifier for data set names. I don't know which came first in the 1960s: the PSCB or the antiquated userid data base mechanism used in the 1960s. RACF was just a dream then.

RACF in more recent z/OS releases than is used in Fandezhi provides "password phrases" that can be longer than 8 bytes, and for passwords with mixed cases. It took several z/OS releases to get password phrases and mixed case passwords working properly; both RACF and ISV provided security systems needed work, but as far as I know everyone is on board.

Hi steve-myers,
Thank you for your explanation. Now I want to simplify my question and make it clear to understand.

My question is how can I get the TSO user ID and password to visit the Fandezhi z/OS system.

You pointed that"The userid and password you use to use this web site have nothing to do with the userid and password used to access the Fandezhi z/OS system."
So it seems i should apply another user ID in somewhere to use the Fandezhi z/OS system.

IVANSAM wrote:... My question is how can I get the TSO user ID and password to visit the Fandezhi z/OS system. ...

Why didn't study the Mainframe FAQ section of this forum? I'm quite certain you will find the answer to your query there.

Far more to the point, why doesn't your employer, Beyondsoft, provide you with access to an up-to-date z/OS system? If they think they can offload you to FanDeZhi at zero-cost for themselves, you may find that your access to the system will be of a very short duration...

I want to emphasize that although take a job from my employer called Beyondsoft, I don't use Mainframe technic.
That means i learn this Mainframe knowledge has nothing to do with my employer.
it's my individual behave, just for selt-learning instead of commercial purpose. So please let stay here.

I found my TSO id have deleted. Can you help me to reactive it?
TSO ID: IVANSAM

Best wishes!!