How to change the password history in ACF2 to retain the last x number of passwords and if there is any maximum limit?
Release : 16.0
Component : ACF2 for z/OS
The password history can be changed by adding PSWXHIST PSWXHST#(nn) as shown below for retaining last 24 passwords as an example:
CHANGE PSWD PSWXHIST PSWXHST#(24)
The max value for PSWXHST# is 64.
Note that there are performance considerations to keep in mind when increasing password history in conjunction with using AES256 encrypted passwords. It is not recommended to go beyond PSWXHST#(10) when AES256 encryption is enabled.