$ db2 connect to RHDEV user <username>
Enter current password for <username>:
SQL30082N Security processing failed with reason "24" ("USERNAME AND/OR PASSWORD INVALID"). SQLSTATE=08001
sys-auth was not configured to use PAM
cp /etc/pam.d/sshd /etc/pam.d/sys-auth
DB2 Reason Code 24 (USERNAME AND/OR PASSWORD INVALID)
The username specified, password specified, or both, are invalid. Some specific causes are:
1. If you have recently changed permissions on DB2 critical files such as db2ckpw or moved to a new Fixpak, the db2iupdt command which updates the instance might not have been run.
2. The username being used might be in an invalid format. For example, on UNIX and Linux platforms, usernames must be all lowercase.
3. An error might have been made in specifying the catalog information. For example, the correct authentication type might not have been specified or, if applicable, the remote server might not have been cataloged on the local system.
For more information on authentication, search the DB2 Information Center (http://publib.boulder.ibm.com/infocenter/db2luw/v9) using terms such as "authentication".