Apex 4 , problem with collection executions

Question

Hi ,
I am having the following problem with the execution of one collection :
Reference thread : Re: APEX 4 , executing a remote procedure and populating data using collection
DBNAME ---> list item which I build from the DB links which I built ( as dynamic query in the shared components from a local table which holds entries of dblink names )
USERLIST --> list item of users which should display dynamicaly the users of that db link I choose in DBNAME ( based on a collection )
buttons CANCEL and SUBMIT
4- Initial COLLECTION page process which is calculated before Header :
DECLARE
q varchar2(4000);
BEGIN
IF APEX_COLLECTION.COLLECTION_EXISTS(P_COLLECTION_NAME => 'QRY1') THEN
APEX_COLLECTION.DELETE_COLLECTION(P_COLLECTION_NAME => 'QRY1');
END IF;
q := 'SELECT username , username FROM sys.dba_users@'||:P23_DBNAME ;
APEX_COLLECTION.CREATE_COLLECTION_FROM_QUERY_B(
P_COLLECTION_NAME => 'QRY1',
P_QUERY => Q);
END;
For USERLIST list item I am using the following in LIST OF VALUES DEFINITION :
SELECT C001, C002 FROM APEX_COLLECTIONS WHERE COLLECTION_NAME='QRY1'
5 - to submit the values from the screen to the remote database procedure I am using the following submit process ON SUBMIT AFTER CALCULATIONS:
DECLARE
v_statement varchar2(255);
BEGIN
v_statement := 'begin
Lock_User@&P24_DBNAME.(''&P24_USERLIST.'');
insert into log values (1,''user locked'') ;
commit ;
end;';
EXECUTE IMMEDIATE v_statement;
END;
The problem :
The form runs sucessfully , where I the USERLIST changes dynamicaly when I change the DBNAME values , but as soon as I logout and login with another user1 , the collection does not execute and i get "ORA-01729: database link name expected".
I login with user1 in edit mode and recreate the collection , run again , the collection executes successfuly .
If I create a new user2 ( using the sample application pages ) and login with the new user2 , i have the same problem , thus I ho login with user2 in edit mode and try to run the collection .
How can I control the collection to execute regardless of the application user logged in ??
thanks in advance
yousef

Answer 1

Hi ,
I am having the following problem with the execution of one collection :
Reference thread : Re: APEX 4 , executing a remote procedure and populating data using collection
DBNAME ---> list item which I build from the DB links which I built ( as dynamic query in the shared components from a local table which holds entries of dblink names )
USERLIST --> list item of users which should display dynamicaly the users of that db link I choose in DBNAME ( based on a collection )
buttons CANCEL and SUBMIT
4- Initial COLLECTION page process which is calculated before Header :
DECLARE
q varchar2(4000);
BEGIN
IF APEX_COLLECTION.COLLECTION_EXISTS(P_COLLECTION_NAME => 'QRY1') THEN
APEX_COLLECTION.DELETE_COLLECTION(P_COLLECTION_NAME => 'QRY1');
END IF;
q := 'SELECT username , username FROM sys.dba_users@'||:P23_DBNAME ;
APEX_COLLECTION.CREATE_COLLECTION_FROM_QUERY_B(
P_COLLECTION_NAME => 'QRY1',
P_QUERY => Q);
END;
For USERLIST list item I am using the following in LIST OF VALUES DEFINITION :
SELECT C001, C002 FROM APEX_COLLECTIONS WHERE COLLECTION_NAME='QRY1'
5 - to submit the values from the screen to the remote database procedure I am using the following submit process ON SUBMIT AFTER CALCULATIONS:
DECLARE
v_statement varchar2(255);
BEGIN
v_statement := 'begin
Lock_User@&P24_DBNAME.(''&P24_USERLIST.'');
insert into log values (1,''user locked'') ;
commit ;
end;';
EXECUTE IMMEDIATE v_statement;
END;
The problem :
The form runs sucessfully , where I the USERLIST changes dynamicaly when I change the DBNAME values , but as soon as I logout and login with another user1 , the collection does not execute and i get "ORA-01729: database link name expected".
I login with user1 in edit mode and recreate the collection , run again , the collection executes successfuly .
If I create a new user2 ( using the sample application pages ) and login with the new user2 , i have the same problem , thus I ho login with user2 in edit mode and try to run the collection .
How can I control the collection to execute regardless of the application user logged in ??
thanks in advance
yousef