In the release before 11g, Presentation Services groups were used for organizing users. Presentation Services group membership was used to determine the permissions and privileges that are associated with a user.
On OBIEE 11g:
Presentation Services administrators must ensure that the names of Catalog groups are different from any user IDs that are used to log in to Oracle BI Presentation Services. If a user and a Catalog group share the same name, then the user receives an invalid_account message when attempting to log in to Oracle BI Presentation Services.
From the 11g Home page in Presentation Services, select Administration > Manage Catalog Groups
When you create a group, you may have this error on the web page:
Invalid account.
Error Details
Error Codes: I5OWP2W8
of this error in the log:
Type: Error
Severity: 42
Time: Mon Dec 14 11:57:04 2009
File: project/websecurity/securitymanager.cpp Line: 90
Properties: ThreadID-5052;HttpCommand-ManageGroups;RemoteIP-192.168.40.111;User-Administrator
Location:
saw.httpserver.request
saw.rpc.server.responder
saw.rpc.server
saw.rpc.server.handleConnection
saw.rpc.server.dispatch
saw.threadPool
saw.threads
Invalid account.
This error can occur when you try to create a catalog group with the same name than an existing user.
http://download.oracle.com/docs/cd/E14571_01/bi.1111/e10541/mgrgrpsusers.htm#i1005291