Why "xhost +" is needed for launching db2cc ?

prabhakar.9885 · #1 (**permalink**) 11-12-10, 06:46

Hello everybody.

I have successfully installed the DB2 9.7 on ubuntu 10.10.
When I am trying to launch the control center(db2cc), I am getting the following error message on the terminal.

No protocol specified

Error: Can not open display

I have found that, I need to executer the command xhost + as the super user(system administrator) in order to resolve this error.

I have executed it.
Then I was able to launch the db2cc successfully.

Now, my question is, why should we use xhost command for resolving this error ?

nvk@vhv · #2 (**permalink**) 11-12-10, 07:23

If the db2cc ist started from another user, then this user has no permissions for your GUI-Session.

prabhakar.9885 · #3 (**permalink**) 11-13-10, 03:18

I didn't understand, what you meant to say.

Can you please, make it a little bit more brief

dr_te_z · #4 (**permalink**) 11-15-10, 02:18

Quote:

Originally Posted by prabhakar.9885

Now, my question is, why should we use xhost command for resolving this error ?

Good question, wrong forum. This has nothing to do with db2. Look in unix/linux forums.

But, okay:
log in as db2inst and type "startx". In this graphical session you will have no problems

or

open a terminal in you own graphical session and type

Code:

ssh -X -Y db2inst1@localhost

type password when prompted. To see if it works you can type "xclock". When a clock appears, stop the clock and type "db2cc". Should work.

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