Re: SAP Gui give SAP System Messate A:00:900

Hi Nainesh ,

Please check note 1837503 - SAP system could not connect to DB

1. Check if the SAP DB user have the correct default DB role assigned, run the
   following SQL:
   SQL> select grantee, granted_role, default_role from
   dba_role_privs
   where grantee='SAP<SID>';
2. Check if SAPCONN ROLE was assigned to the SAP DB user as the default role,
   if not, change it by:
   SQL> alter user SAP<SID> default role SAPCONN;
   
   
3. Try to restart the SAP system again.

THanks

Manas Behra