title: Insufficient Priviledges error when trying to execute the procedure from package
body: <p>Step 1 : I have created one package with procedures to create context and set value to the context.</p>
  
  <pre><code>create or replace PACKAGE Context_check AS
  
      PROCEDURE set_context_vpd_proc (V_ISID in varchar2);
      procedure set_context  (v_isid_a  in varchar2);
  
  END Context_check;
  
  create or replace PACKAGE BODY Context_check AS
   PROCEDURE set_context_vpd_proc (V_ISID in varchar2)
      AS
      v_STAT VARCHAR2(200);
      v_chk varchar2(2000);
    BEGIN
           DBMS_SESSION.SET_CONTEXT('VPD_CTX', 'ISID', V_ISID );
      --v_STAT := '';
    EXCEPTION
     WHEN NO_DATA_FOUND THEN NULL;
    END;
  
  procedure set_context  (v_isid_a  in varchar2)
  as
  begin
  
  EXECUTE IMMEDIATE  'CREATE OR REPLACE CONTEXT VPD_CTX using set_context_vpd_proc';
  
  set_context_vpd_proc (v_isid_a);
  
  EXCEPTION
     WHEN NO_DATA_FOUND THEN NULL;
  end set_context;
  
  END Context_check;
  </code></pre>
  
  <p>Step 2: When I am trying to executing the procedure I am getting an error</p>
  
  <pre><code>EXECUTE Context_check.set_context('Ana');
  
  Error starting at line 43 in command:
  EXECUTE Context_check.set_context('Ana')
  Error report:
  ORA-01031: insufficient privileges
  ORA-06512: at "SYS.DBMS_SESSION", line 114
  ORA-06512: at "SEC_ADMIN.CONTEXT_CHECK", line 8
  ORA-06512: at "SEC_ADMIN.CONTEXT_CHECK", line 20
  ORA-06512: at line 1
  01031. 00000 -  "insufficient privileges"
  *Cause:    An attempt was made to change the current username or password
             without the appropriate privilege. This error also occurs if
             attempting to install a database without the necessary operating
             system privileges.
             When Trusted Oracle is configure in DBMS MAC, this error may occur
             if the user was granted the necessary privilege at a higher label
             than the current login.
  *Action:   Ask the database administrator to perform the operation or grant
             the required privileges.
             For Trusted Oracle users getting this error although granted the
             the appropriate privilege at a higher label, ask the database
             administrator to regrant the privilege at the appropriate label.
  </code></pre>
  
  <p>I have already given all the grants on that package.Still I am not able to execute this procedure.</p>
  
  <p>Note : If I create the same procedures as stand alone ,its working fine and setting the context.</p>