How to find the Oracle user id and the description of the Oracle User

 SELECT * FROM FND_ORACLE_USERID

To find the concurrent request Arguments

 To find the current request arguments in 2 ways. 

1.SELECT  ARGUMENT_TEXT, ARGUMENT1,ARGUMENT2,ARGUMENT3, ARGUMENT4,ARGUMENT5 FROM FND_CONCURRENT_REQUESTS WHERE REQUEST_ID  = 4532223

2. select * from FND_CONC_REQUEST_ARGUMENTS WHERE REQUEST_ID = 112581918