Re: JDBC behaviour
let me put this way
table employee ( id PrimaryKey, name )
In Java ( just little pseudo-code way )
try {
conn.setAutoCommit(false);
try { executeUpdate("insert into employee(id,name) values(1, 'K1')"); } catch ...
try { executeUpdate("insert into employee(id,name) values(1, 'K1')"); } catch ...
try { executeUpdate("insert into employee(id,name) values(1, 'K2')"); } catch ...
conn.commit();
} catch ...
throws error
1. duplicate key value violates unique constraint "employee_pkey"
2. current transaction is aborted, commands ignored until end of transaction block
In PL/SQL ( similar error thrown when used BEGIN-END )
postgres=# begin;
BEGIN
postgres=# insert into employee values (1,'aa');
INSERT 0 1
postgres=# insert into employee values (2,'bb');
INSERT 0 1
postgres=# insert into employee values (3,'cc');
INSERT 0 1
postgres=# insert into employee values (1,'aa');
ERROR: duplicate key value violates unique constraint "employee_pkey"
DETAIL: Key (eid)=(1) already exists.
postgres=# insert into employee values (4,'dd');
ERROR: current transaction is aborted, commands ignored until end of transaction block
my question Java setAutoCommit (false) is behaving like PL/SQL BEGIN-END
On Thu, Feb 18, 2016 at 2:54 PM, Andreas Joseph Krogh <andreas@visena.com> wrote:
På torsdag 18. februar 2016 kl. 10:20:51, skrev Sridhar N Bamandlapally <sridhar.bn1@gmail.com>:setAutoCommit(false), it should not be treating all next transactions as single set, simple, this is what expected behaviorThe point is that all subsequent statements (after an exception) are part of the same transaction (in autocommit=false mode). So you have to issue an explicit ROLLBACK before any new statement can give meaningful results.--Andreas Joseph KroghCTO / Partner - Visena ASMobile: +47 909 56 963
Вложения
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