Open Source Document Management System | OpenKM

Hi, my OpenKM Version: 6.2.1
Today I as Administration use the Database Query.
For example I type this Query by JDBC Type on the line: delete from OKM_USER where USR_ID = "wn";
I get this Error: user lacks privilege or object not found: wn
USR_ID = "wn" exists in DB. Do you know, Why I lack privilege?

and when you make a select is executed correctly ? althought has no relation within I suggest upgrade to 6.2.2 we have released this week.