title: DB2 Can't connect to db with new user
body: <p>I have created a DB2 database, and I'm trying to create a new user.
  Here the steps I made :
   - Creating an OS (Linux) user with root account (useradd myuser)
   - Giving a password to the new user (passwd myuser)
   - On IBM Data Studio, I added a new user and grant him connect to the database</p>
  
  <p>But on Linux, with the user which owns the instance, I tried to connect to the database with the new user (db2 connect to MYDB user myuser), I've the following :
  SQL30082N  Security processing failed with reason "24" ("USERNAME AND/OR
  PASSWORD INVALID").  SQLSTATE=08001</p>
  
  <p>Am I doing something wrong ?</p>
  
  <p>Thanks in advance for your help</p>