Duplicate Key -- Have I missed something
| От | Robert Perry |
|---|---|
| Тема | Duplicate Key -- Have I missed something |
| Дата | |
| Msg-id | 2994A7D7-EB9B-47B6-B782-BA0E6A71187D@lodestonetechnologies.com обсуждение исходный текст |
| Ответы |
Re: Duplicate Key -- Have I missed something
(Michael Fuhr <mike@fuhr.org>)
|
| Список | pgsql-admin |
I have a production environment that is running the code that caused this problem about once every 30 seconds or so, with two clients. It normally runs very well, but I was suddenly hit with a duplicate key violation for a table where the primary key is generated in part from sequence.
How might this have happen?
ERROR: duplicate key violates unique constraint "game_pay_cash_coupon_trans_pkey"
CONTEXT: SQL statement "INSERT INTO game_pay_cash_coupon_trans( ttype, lid, id, gpid, cash_paid, trans_user ) values( 'INSERT', $1 , $2 , $3 , $4 , $5 )"
PL/pgSQL function "game_pay_cash_coupon_add" line 7 at SQL statement
SQL statement "SELECT game_pay_cash_coupon_add( $1 , gpk, cash_in_use ) FROM game_state_game gsg, game_state_cash_coupon gscc WHERE gsg.gid = $2 AND gscc.gid = $3 "
PL/pgSQL function "game_state_complete_payment" line 13 at perform
SQL statement "SELECT game_state_complete_payment( $1 , $2 )"
PL/pgSQL function "game_state_game_complete" line 20 at perform
The offeded table
Table "public.game_pay_cash_coupon_trans"
Column | Type | Modifiers
------------+-----------------------------------+------------------------------------------------------------------
toid | d_location_id | not null default "location"()
tid | d_trans_id | not null default nextval('game_pay_cash_coupon_trans_seq'::text)
ttype | d_game_pay_cash_coupon_trans_type |
lid | d_location_id |
id | d_game_pay_cash_coupon_id |
gpid | d_game_play_id |
cash_paid | d_money |
trans_user | d_user_name |
trans_time | d_timestamp |
Indexes:
"game_pay_cash_coupon_trans_pkey" PRIMARY KEY, btree (toid, tid)
Triggers:
trig_game_pay_cash_coupon_trans_aft_ins AFTER INSERT ON game_pay_cash_coupon_trans FOR EACH ROW EXECUTE PROCEDURE trig_func_game_pay_cash_coupon_trans_aft_ins()
Has OIDs: no
The sequence in question
mallball=> select * from game_pay_cash_coupon_trans_seq;
sequence_name | last_value | increment_by | max_value | min_value | cache_value | log_cnt | is_cycled | is_called
--------------------------------+------------+--------------+---------------------+-----------+-------------+---------+-----------+-----------
game_pay_cash_coupon_trans_seq | 100000815 | 1 | 9223372036854775807 | 1 | 1 | 32 | f | t
The build in question
mallball=> select * from version();
version
-------------------------------------------------------------------------------------------------------
PostgreSQL 8.0.1 on i686-pc-linux-gnu, compiled by GCC gcc (GCC) 3.4.2 20041017 (Red Hat 3.4.2-6.fc3)
Thanks
Robert Perry
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