mysql – 键’PRIMARY’的重复条目’…’

正如你和我都知道的那样,关于这种错误信息有很多问题.

但我找不到任何好的答案,因为答案太多了.

我有一个存储客户端发送的nonces的表.

但有时(偶尔)db会抱怨重复的主键插入,即使没有完全相同主键的记录也是如此.

这是JVM显示的内容.

[#|2012-11-09T11:06:52.098+0900|WARNING|glassfish3.1.2|javax.enterprise.system.container.ejb.com.sun.ejb.containers|_ThreadID=236;_ThreadName=Thread-2;|EJB5184:A system exception occurred during an invocation on EJB Nonce2Bean,method: public java.lang.Object kr.co.ticomms.gameground.business.AbstractEntityFacade.persist(java.lang.Object)|#]

[#|2012-11-09T11:06:52.099+0900|WARNING|glassfish3.1.2|javax.enterprise.system.container.ejb.com.sun.ejb.containers|_ThreadID=236;_ThreadName=Thread-2;|javax.ejb.EJBException
        ...
Caused by: javax.persistence.PersistenceException: Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate entry 'c8b4bdb84606fed0-c8b4bdb84606fed0_1352426820765_1880007534138556' for key 'PRIMARY'
Error Code: 1062
Call: INSERT INTO NONCE2 (NONCE,UDID,CREATED_DATE) VALUES (?,?,?)
        bind => [3 parameters bound]
Query: InsertObjectQuery(c8b4bdb84606fed0/c8b4bdb84606fed0_1352426820765_1880007534138556402)
        ...
        ... 29 more
Caused by: Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate entry 'c8b4bdb84606fed0-c8b4bdb84606fed0_1352426820765_1880007534138556' for key 'PRIMARY'
Error Code: 1062
Call: INSERT INTO NONCE2 (NONCE,?)
        bind => [3 parameters bound]
Query: InsertObjectQuery(c8b4bdb84606fed0/c8b4bdb84606fed0_1352426820765_1880007534138556402)
       ...
       ... 59 more
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate entry 'c8b4bdb84606fed0-c8b4bdb84606fed0_1352426820765_1880007534138556' for key 'PRIMARY'
|#]

这是mysql显示的内容.

mysql> SHOW VARIABLES LIKE "%version%";
+-------------------------+-------------------------+
| Variable_name           | Value                   |
+-------------------------+-------------------------+
| protocol_version        | 10                      |
| version                 | 5.1.62-0ubuntu0.10.04.1 |
| version_comment         | (Ubuntu)                |
| version_compile_machine | x86_64                  |
| version_compile_os      | debian-linux-gnu        |
+-------------------------+-------------------------+
5 rows in set (0.00 sec)

mysql> DESC NONCE2;
+--------------+--------------+------+-----+-------------------+-------+
| Field        | Type         | Null | Key | Default           | Extra |
+--------------+--------------+------+-----+-------------------+-------+
| CREATED_DATE | timestamp    | NO   |     | CURRENT_TIMESTAMP |       |
| UDID         | varchar(255) | NO   | PRI | NULL              |       |
| NONCE        | varchar(255) | NO   | PRI | NULL              |       |
+--------------+--------------+------+-----+-------------------+-------+
3 rows in set (0.00 sec)

mysql> SHOW CREATE TABLE NONCE2;
+--------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Table  | Create Table                                                                                                                                                                                                                |
+--------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| NONCE2 | CREATE TABLE `NONCE2` (
  `CREATED_DATE` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,`UDID` varchar(255) NOT NULL,`NONCE` varchar(255) NOT NULL,PRIMARY KEY (`UDID`,`NONCE`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 |
+--------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

+--------+------------+----------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+
| Table  | Non_unique | Key_name | Seq_in_index | Column_name | Collation | Cardinality | Sub_part | Packed | Null | Index_type | Comment |
+--------+------------+----------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+
| NONCE2 |          0 | PRIMARY  |            1 | UDID        | A         |           7 |     NULL | NULL   |      | BTREE      |         |
| NONCE2 |          0 | PRIMARY  |            2 | NONCE       | A         |         403 |     NULL | NULL   |      | BTREE      |         |
+--------+------------+----------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+
2 rows in set (0.00 sec)

mysql>

我尝试删除并重新创建表,但会出现同样的问题.

我在GlassFish上使用JPA.

有帮助吗？

—————————————–更新

我正在使用JPA.

ID类.

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