Hi Team, Here is test case.----create table testx ( v_code character varying(32), client_id bigint ); alter table testx add constraint testx_pkey primary key (v_code);
create table testy ( dxid bigint, v_code character varying(32) ); alter table testy add constraint testy_pkey primary key (dxid);create index on testy (v_code); Let's begin two session, in session1 I am going begin a transaction and run select on parent table: Session1----begin;select * from testx; On another session let's call session2, I am running create FK on second table Session2--- alter table testy add constraint testy_fkey foreign key (v_code) references testx(v_code); <--This works.alter table testy drop constraint testy_fkey; <--Hangs Regards,Virendra Kumar