We are on UDB V8.1.0 for AIX. When we try to start the DAS it returns SQL4401C.

The db2dasdiag.log contains the following :-

2004-03-31-19.15.50.508097 pid:67364 tid:1 level:2
DB2 tools - DB2 administration server - rrm_main() probe:70
data #1 (4 bytes)
-8050
Anyone knows what the solution might be ?

Hm.. could be das port conflict. Maybe try specifying a das port using
db2dasport command.

To see the current das port setting, do db2dasport -q

Hope that helps.

Unfortunately I couldn't find the db2dasport file. Does it come with DB2 on AIX ?

I believe the default port for the DAS to run is 523 - correct me if I am wrong. I checked the /etc/services and it does not show 523 being used.
Is there any other way of checking whether anything is running on port 523 on AIX ?

I had a very similar problem, I found that if I did an "UPDATE ADMIN CFG USING SCHED_ENABLE OFF" it starts successfully.

I didn't pursue it with IBM, as we are at an unsuported Linux kernel right now. There were also some *.trp files generated in the das dump directory, indicating what looks like a jvm issue... Presumably the Scheduler must be Java-based?

How did you find out that you needed to change the sched_enable variable ?

Here's some more info from db2diag.log :-

2004-04-02-09.28.04.287891 Instance:db2inst1 Node:000
PID:46154(db2agent (idle) 0) TID:1 Appid:none
DRDA Application Server sqljsInitAgent Probe:50

sqljsVerifyAgent rc = 810f 001c ....


2004-04-02-09.28.04.292501 Instance:db2inst1 Node:000
PID:46154(db2agent (idle) 0) TID:1 Appid:none
DRDA Application Server sqljsDrdaAsDriver Probe:10

DIA8532C An internal processing error has occurred.
ZRC=0x820A0001

Can anyone interpret this ?

Honestly it was a fluke... one of the first things they often recommend you do is to do a 'RESET' on your admin cfg, when I did that it started, but when I started putting my settings back it once again broke. That setting proved the one, and further examination suggested that the JVM was having trouble.

Not sure at all this is what's going on in your case, but just something you might want to try, if you're not planning on using the Scheduler.