Issues starting ECC 6.0 instance after changing passwords everywhere

Question

Hello everyone.
I've had this problem for 2 weeks now. I tried all the solutions i found on the web but still my problem persists.
2 weeks ago, I changed alle the passwords for the MaxDB Users (control, superdba, sap<sid>, etc) because we lost these passwords.
Of course my SAP instance couldn't start anymore because xuser had the wrong passwords. I deleted the xuser list and configured it new.
This is what it looks like:
XUSER Entry  1
Key         :DEFAULT
Username    :SAPC01
UsernameUCS2:S.A.P.C.0.1. .
Password    :?????????
PasswordUCS2:?????????
Dbname      :DB2
Nodename    :<unspecified>
Sqlmode     :<unspecified>
Cachelimit  :-1
Timeout     :0
Isolation   :0
Charset     :<unspecified>
XUSER Entry  2
Key         :c
Username    :CONTROL
UsernameUCS2:C.O.N.T.R.O.L.
Password    :?????????
PasswordUCS2:?????????
Dbname      :DB2
Nodename    :SAPTEST
Sqlmode     :INTERNAL
Cachelimit  :-1
Timeout     :-1
Isolation   :-1
Charset     :<unspecified>
XUSER Entry  3
Key         :w
Username    :SUPERDBA
UsernameUCS2:S.U.P.E.R.D.B.A
Password    :?????????
PasswordUCS2:?????????
Dbname      :DB2
Nodename    :SAPTEST
Sqlmode     :INTERNAL
Cachelimit  :-1
Timeout     :-1
Isolation   :-1
Charset     :<unspecified>
Sadly, my SAP instance can't start completely, the DISP+WORK.exe hangs, saying
"J2EE Status unavalible"
and the Syslog tells me:
"Database: Database error -4008"
"Database: > POS(1) Unknown user name/password combination "
What module wants to have the password from me? And where can i put it?
Does the xuser list have to contain a J2EE entry?
Non of the web servers run, i cannot access  any webpage (eg 127.0.0.1:5XX00)
Please help me. Thank you in advance.
Jan

Answer 1

Hello Markus.
Thank you very much for your answer.
I now have a xuser for the J2EE. But it didn't entirely solve my Problem.
The DISP+WORK.exe still shows
"J2EE Status unavalible"
but the Syslog now shows several other Warnings. Could you help me with those too?
In reverse order:
- SAP-Basis System: Operating system call           recv failed (error no. 10054)
- SAP-Basis System: Operating system call        connect failed (error no. 10061)
- SAP-Basis System: Communication error, CPIC return code 017, SAP return code 236
- SAP-Basis System: > CPI-C function:  CMINIT(SAP)
- Communications data: Could not send SLD data
- SAP-Basis System: Run-time error "RAISE_EXCEPTION" occurred
- SAP-Basis System: Transaction Canceled 00                  671 ( RAISE_EXCEPTION                                                20110524140844saptest_C01_02                  SAPSYS      000         )
I think i am not so far away from the solution, but i'm missing something here...
Do you need any logs?
Thanks again.
Jan