Static ticket cache name

[Techie]

Hello is it possible to set a static credential cache name? For
example force the use of krb5cc_12334.

I have a situation where there will only be one user on a box at a
time and I want to use a static credential cache name. I tried using
pam_krb5 but it is not working.
I also tried setting KRB5CCNAME and PAM_KRB5_CCNAME but no success. It
may be that this is impossible but figure I would ask.


Thank you