I am trying to create an adapter for
sql2008 database but I am getting this error.

(FOC1400) SQLCODE IS 18456 (HEX: 00004818) XOPEN: 28000
: Microsoft SQL Server Native Client 10.0: [28000] Login failed for user '
: jupter'.
(FOC1405) SQL PREPARE ERROR.
Any help to solve this issue

Do you have the 2008 client installed ?

what do you mean by do you have 2008 installed. Do you mean if I have sql 2008 r2 enterprise installed

WebFOCUS requires an SQL client to be installed with the WebfOCUS server.

If you have 2008 r2 installed, then the "client" will be there too.

The error message says that "login failed for user jupter'

This could be caused by the security that is set on your sql server vs the security you have set up on your reporting server.

Try setting the security to the sql connection to explicit and enter a user id and password that you know works. Then click the test button. If you get a successfull connection then you know the adapter is Ok. If you don't you can investigate further based on the information returned.