joindeadlock.out

derby database source code.good for you.

ij> disconnect;
ij> connect 'jdbc:derby:wombat;user=U1' AS C1;
ij> autocommit off;
ij> connect 'jdbc:derby:wombat;user=U2' AS C2;
ij(C2)> autocommit off;
ij(C2)> set connection C1;
ij(C1)> -- user 1 for bug 1573
-- a deadlock when reopening a join gets an assertion
-- violation in close()
create table outer1(c1 int);
0 rows inserted/updated/deleted
ij(C1)> create index o1_i1 on outer1(c1);
0 rows inserted/updated/deleted
ij(C1)> insert into outer1 (c1) values 1, 2;
2 rows inserted/updated/deleted
ij(C1)> commit;
ij(C1)> create table inner1(c1 int, c2 char(254));
0 rows inserted/updated/deleted
ij(C1)> create index i1_i1 on inner1(c1);
0 rows inserted/updated/deleted
ij(C1)> insert into inner1 (c1) values 1, 2;
2 rows inserted/updated/deleted
ij(C1)> commit;
ij(C1)> create table inner2(c1 int, c2 char(254));
0 rows inserted/updated/deleted
ij(C1)> create index i2_i1 on inner2(c1);
0 rows inserted/updated/deleted
ij(C1)> insert into inner2 (c1) values 1, 2;
2 rows inserted/updated/deleted
ij(C1)> commit;
ij(C1)> -- this user will get lock timeout in subquery on 2nd next
get cursor c1 as 'select * from outer1 where c1 <= (select count(*) from inner1, inner2 where outer1.c1 = outer1.c1)';
ij(C1)> next c1;
C1         
-----------
1          
ij(C1)> set connection C2;
ij(C2)> update u1.inner1 set c1 = c1 where c1 = 1;
1 row inserted/updated/deleted
ij(C2)> set connection C1;
ij(C1)> next c1;
ERROR 40XL1: A lock could not be obtained within the time requested
ij(C1)> disconnect;
ij> set connection C2;
ij> disconnect;
ij>