OBIEE 12c - cannot login to analytics

Able to access OBIEE Console and EM but unable to login to Analytics. I have already scratched my head over searching for solutions all over. Any suggestion would help here.

[Update] - Not using DB Authentication or BISQLProvider. Tying to login with weblogic on a fresh installation of OBIEE

Steps I have tried:

• Checked bi server and admin server - Both running
• Checked deployments - all running
• Checked JDBC connection (from EM-> Weblogic Domain -> JDBC Datasources) for biplatform_datasource, mds_owsm, opss-data-source and wlsservices_datasource

EM Screenshot showing that no deployment or server is down:

Sawlog error below:

[2017-04-11T23:49:14+08:00] [OBIPS] [ERROR:1] [] [saw.securitysubsystem.checkauthentication.runimpl] [ecid: ] [tid: 5480] [SI-Name: ] [IDD-Name: ] [IDD-GUID: ] [userId: ] Odbc driver returned an error (SQLDriverConnectW). State: HY000. Code: 10058. [NQODBC] [SQL_STATE: HY000] [nQSError: 10058] A general error has occurred. (HY000) State: HY000. Code: 73025. [nQSError: 73025] The Oracle BI Server is currently unavailable for queries. Please contact your System Administrator to report the failure. (HY000)[[ File:checkauthentication.cpp Line:1607 Location: saw.securitysubsystem.checkauthentication.runimpl saw.threadpool.asynclogon saw.threads ]]

[Update 2]: Even the BI Server (OBIS is up): I also tried uninstalling OBIEE completely and reinstalling it back. I was able to login to analytics with admin user (weblogic) only once after config.cmd. And as soon as I restarted the services, analytics did not allow login for weblogic user. I feared that it could be due to hostname issue but the hostname is consistent as well.

[Update 3 - Resolved]: Possibly the IP Address of the machine was creating a problem here. I set the machine to a static IP address and added a host name resolution in Windows\System32\drivers\etc\hosts. This did the trick for me. Thanks for all the suggestions.

[nQSError: 73025] The Oracle BI Server is currently unavailable for queries.

^-- Your screenshot only shows admin server and managed server. What's the actual status of the Oracle BI Server (OBIS)?

Target Navigation -> Business Intelligence -> biinstance -> Availability