Permissions via db link problem

create database link remote_lnk
  connect to user1 identified by user1
  using 'remote_alias'
/

-- USER1 owns table assess_rules
-- running both in my schema which has the DBA role

-- this works
declare
  l_cnt number ;
begin
   select count(*) into l_cnt from assess_rules@remote_lnk ;
   dbms_output.put_line(l_cnt)
end;
/
62001

-- this doesn't work, no error just runs forever
begin
BEGIN
        DELETE FROM assess_lcpd_rules  l
            WHERE
                    NOT EXISTS (  SELECT   null
                                  FROM     assess_rules@remote_lnk
                                  WHERE    rule_id = l.rule_id
                               ) ;
                              
        EXCEPTION
           WHEN   others
           THEN
                  RAISE ;
end ;
/

In the two blocks I play a select on the remote table. But the local deletion will not work... it just hangs.

Solved by replacing "SELECT null" with "SELECT 1". That makes no sense to me. With the help of 11.2.0.2.

Tags: Database

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