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--
-- Licensed to the Apache Software Foundation (ASF) under one or more
-- contributor license agreements. See the NOTICE file distributed with
-- this work for additional information regarding copyright ownership.
-- The ASF licenses this file to You under the Apache License, Version 2.0
-- (the "License"); you may not use this file except in compliance with
-- the License. You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
--
-- test DDL Table Lock mode
call SYSCS_UTIL.SYSCS_SET_RUNTIMESTATISTICS(1);
maximumdisplaywidth 2000;
CREATE PROCEDURE WAIT_FOR_POST_COMMIT() DYNAMIC RESULT SETS 0 LANGUAGE JAVA EXTERNAL NAME 'org.apache.derbyTesting.functionTests.util.T_Access.waitForPostCommitToFinish' PARAMETER STYLE JAVA;
-- create tables with different lock modes
drop table default1;
create table default1(c1 int);
drop table row1;
create table row1(c1 int);
alter table row1 locksize row;
drop table table1;
create table table1(c1 int);
alter table table1 locksize table;
-- verify that views have table lock mode of 'R' (ignored)
create view v1 as select * from table1;
select tablename, lockgranularity from sys.systables
where tablename = 'V1';
drop view v1;
-- verify that system tables have lock mode of 'R'
select tablename, lockgranularity from sys.systables
where tablename = 'SYSTABLES';
-- READ COMMITTED tests
call SYSCS_UTIL.SYSCS_SET_RUNTIMESTATISTICS(1);
maximumdisplaywidth 2000;
set current isolation = CS;
-- all selects should be row locked except for table1
select * from default1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
select * from row1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
select * from table1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
-- scans for all updates should be row locked except for table1
update default1 set c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
update default1 set c1 = 1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
update row1 set c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
update row1 set c1 = 1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
update table1 set c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
update table1 set c1 = 1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
-- all inserts should be row locked except for table1
insert into default1 values 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
insert into row1 values 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
insert into table1 values 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
-- scans for all deletes should be row locked except for table1
delete from default1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
delete from default1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
delete from row1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
delete from row1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
delete from table1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
delete from table1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
-- REPEATABLE READ tests
-- repeatable read works the same as serializable when no indexes are involved
-- create tables with different lock modes
drop table default1;
create table default1(c1 int);
drop table row1;
create table row1(c1 int);
alter table row1 locksize row;
drop table table1;
create table table1(c1 int);
alter table table1 locksize table;
set current isolation RS;
-- all selects should be row locked except for table1
select * from default1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
select * from row1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
select * from table1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
-- scans for all updates should be row locked except for table1
update default1 set c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
update default1 set c1 = 1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
update row1 set c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
update row1 set c1 = 1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
update table1 set c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
update table1 set c1 = 1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
-- all inserts should be row locked except for table1
insert into default1 values 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
insert into row1 values 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
insert into table1 values 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
-- scans for all deletes should be row locked except for table1
delete from default1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
delete from default1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
delete from row1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
delete from row1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
delete from table1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
delete from table1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
-- alter table
-- first set to same value (stupid test)
alter table default1 locksize row;
alter table row1 locksize row;
alter table table1 locksize table;
select tablename, lockGranularity from sys.systables
where tablename in ('DEFAULT1', 'ROW1', 'TABLE1')
order by tablename;
-- set to opposite value
alter table default1 locksize table;
alter table row1 locksize table;
alter table table1 locksize row;
select tablename, lockGranularity from sys.systables
where tablename in ('DEFAULT1', 'ROW1', 'TABLE1')
order by tablename;
-- READ UNCOMMITTED tests
-- create tables with different lock modes
drop table default1;
create table default1(c1 int);
drop table row1;
create table row1(c1 int);
alter table row1 locksize row;
drop table table1;
create table table1(c1 int);
alter table table1 locksize table;
set isolation = read uncommitted;
-- all selects should be row locked except for table1
select * from default1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
select * from row1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
select * from table1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
-- scans for all updates should be row locked except for table1
update default1 set c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
update default1 set c1 = 1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
update row1 set c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
update row1 set c1 = 1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
update table1 set c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
update table1 set c1 = 1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
-- all inserts should be row locked except for table1
insert into default1 values 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
insert into row1 values 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
insert into table1 values 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
-- scans for all deletes should be row locked except for table1
delete from default1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
delete from default1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
delete from row1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
delete from row1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
delete from table1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
delete from table1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
-- alter table
-- first set to same value (stupid test)
alter table default1 locksize row;
alter table row1 locksize row;
alter table table1 locksize table;
select tablename, lockGranularity from sys.systables
where tablename in ('DEFAULT1', 'ROW1', 'TABLE1')
order by tablename;
-- set to opposite value
alter table default1 locksize table;
alter table row1 locksize table;
alter table table1 locksize row;
select tablename, lockGranularity from sys.systables
where tablename in ('DEFAULT1', 'ROW1', 'TABLE1')
order by tablename;
-- SERIALIZABLE tests
-- create tables with different lock modes
drop table default1;
create table default1(c1 int);
drop table row1;
create table row1(c1 int);
alter table row1 locksize row;
drop table table1;
create table table1(c1 int);
alter table table1 locksize table;
set isolation serializable;
-- all selects should be table locked since no where clause
select * from default1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
select * from row1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
select * from table1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
-- scans for all updates should be table locked
-- (No indexes, so will always do table scan)
update default1 set c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
update default1 set c1 = 1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
update row1 set c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
update row1 set c1 = 1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
update table1 set c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
update table1 set c1 = 1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
-- all inserts should be row locked except for table1
insert into default1 values 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
insert into row1 values 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
insert into table1 values 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
-- scans for all deletes should be table locked
-- (No indexes, so will always do table scan)
delete from default1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
delete from default1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
delete from row1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
delete from row1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
delete from table1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
delete from table1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
-- alter table
-- first set to same value (stupid test)
alter table default1 locksize row;
alter table row1 locksize row;
alter table table1 locksize table;
select tablename, lockGranularity from sys.systables
where tablename in ('DEFAULT1', 'ROW1', 'TABLE1')
order by tablename;
-- set to opposite value
alter table default1 locksize table;
alter table row1 locksize table;
alter table table1 locksize row;
select tablename, lockGranularity from sys.systables
where tablename in ('DEFAULT1', 'ROW1', 'TABLE1')
order by tablename;
set isolation read committed;
-- verify lock granularity changed for selects
select * from default1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
select * from row1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
select * from table1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
-- verify lock granularity changed for updates
update default1 set c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
update default1 set c1 = 1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
update row1 set c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
update row1 set c1 = 1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
update table1 set c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
update table1 set c1 = 1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
-- verify lock granularity changed for inserts
insert into default1 values 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
insert into row1 values 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
insert into table1 values 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
-- verify lock granularity changed for deletes
delete from default1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
delete from default1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
delete from row1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
delete from row1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
delete from table1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
delete from table1 where c1 = 1;
values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
CALL WAIT_FOR_POST_COMMIT();
-- bug 3819; delete from table would first
-- end up getting an IX lock on table then
-- an X lock on table; this can lead to
-- deadlocks with multiple threads doing
-- delete from table. fix is to choose
-- row locking for deletes/updates in *all*
-- cases; this would result in an IX lock
-- on the table. means more locking but
-- increased concurrency.
insert into default1 values (1);
insert into default1 values (2);
select * from default1 order by c1;
set isolation to CURSOR STABILITY;
autocommit off;
delete from default1;
-- should see only one lock; earlier used to
-- see 2, one IX and one for X.
select count(*)
from syscs_diag.lock_table
where tablename = 'DEFAULT1' and type = 'TABLE';
commit;
-- cleanup
drop procedure WAIT_FOR_POST_COMMIT;
drop table default1;
drop table row1;
drop table table1;
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