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如何使用Hibernate和Spring Boot啟用批量插入

[英]How to enable batch inserts with Hibernate and Spring Boot

 原文  2015-12-11 16:21:40  7   1    java/ spring/ hibernate/ jpa/ spring-boot

問題描述

我想在交叉表中插入大量實體。 為此，我想啟用hibernate的批量插入選項，這樣每個插入一次不會添加1行，而是添加20行或50行。

我正在嘗試重現hibernate教程的結果。 我已經創建了一個測試函數，它將嘗試插入30個客戶，就像在示例中一樣： 

//Batch inserting test entities
//This code is inside transaction already, so I'm not creating a new one
entityManager.flush();
for (int i = 0; i < 30; ++i) {
    Customer customer = new Customer("Customer" + i, (i + 5) * 1000, "Position " + i);
    entityManager.persist(customer);
    if (i % 20 == 0) {
        entityManager.flush();
        entityManager.clear();
    }
}
entityManager.flush();
entityManager.clear();

Customer類沒有生成的id。 

@Entity
public class Customer {

    @Id
    private String id;
    @Column
    private String name;
    @Column
    private long salary;
    @Column
    private String position;

    public Customer() {

    }

    public Customer(String name, long salary, String position) {
        this.id = UUID.randomUUID().toString();
        this.name = name;
        this.salary = salary;
        this.position = position;
    }

}

我期待看到的是2個插入語句，一個用於20個記錄，一個用於10個記錄。 但是，當我打開postgres日志時，我看到30個插入語句，每個語句只插入一行。 我已經仔細檢查過可以使用postgres插入多行。

我相信問題是由hibernate.jdbc.batch_size 20參數引起的，我應該將其傳遞給hibernate。 但是，由於我使用的是spring boot，因此我唯一的配置文件是application.properties。 所以我試着在那里插入它： 

hibernate.jdbc.batch_size=20
hibernate.order_inserts=true
hibernate.order_updates=true
hibernate.jdbc.batch_versioned_data=true
spring.jpa.hibernate.jdbc.batch_size=20
spring.jpa.hibernate.order_inserts=true
spring.jpa.hibernate.order_updates=true
spring.jpa.hibernate.jdbc.batch_versioned_data=true
spring.jpa.properties.hibernate.jdbc.batch_size=20
spring.jpa.properties.hibernate.order_inserts=true
spring.jpa.properties.hibernate.order_updates=true
spring.jpa.properties.hibernate.jdbc.batch_versioned_data=true

根據這個答案 ，這應該足夠了，但我也嘗試將這些參數復制到我的jar中的hibernate.properties文件中，並通過命令行提供參數： -Dhibernate.jdbc.batch_size=20如本文檔中所述 。

這些都沒有幫助。
我也找不到在我的代碼中讀取批量大小屬性的方法。 似乎在春季啟動應用程序中不存在hibernate文檔中提到的大多數對象。
如何在spring boot應用程序中啟用hibernate的批量插入？

我創建了一個最小的工作示例來重現問題： https ： //github.com/Alexey-/spring-boot-batch

在收到Vlad Mihalcea的回答后，我意識到是的，事實上批處理語句正在運行，至少在hibernate和jdbc級別上。

但是，postgres日志本身顯示出非常有趣的行為：對於批量插入和普通插入的情況，它們幾乎相同。

我最初期望看到的是hibernate會使用這樣的語句： 

test=# INSERT INTO customer (name, position, salary, id) values ('CustomerX', 'PositionX', '1000', 'idX'), ('CUSTOMERY', 'POSITIONY', '1000', 'idY');

哪個會生成與此類似的日志記錄： 

2015-12-15 11:43:33.238 MSK LOG:  statement: INSERT INTO customer (name, position, salary, id) values ('CustomerX', 'PositionX', '1000', 'idX'), ('CUSTOMERY', 'POSITIONY', '1000', 'idY');

但事實並非如此。
當啟用批量插入時（p6spy顯示該語句實際上是批處理的），postgres將生成類似於以下內容的日志： 

2015-12-15 12:07:00.638 MSK LOG:  execute <unnamed>: BEGIN
2015-12-15 12:07:00.638 MSK LOG:  duration: 0.000 ms
2015-12-15 12:07:00.638 MSK LOG:  duration: 0.000 ms  parse <unnamed>: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:07:00.638 MSK LOG:  duration: 0.000 ms  bind <unnamed>: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:07:00.638 MSK DETAIL:  parameters: $1 = 'Customer0', $2 = 'Position 0', $3 = '0', $4 = '9c6a86fb-c991-4e98-aa65-fa736ef67dd7'
2015-12-15 12:07:00.638 MSK LOG:  execute <unnamed>: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:07:00.638 MSK DETAIL:  parameters: $1 = 'Customer0', $2 = 'Position 0', $3 = '0', $4 = '9c6a86fb-c991-4e98-aa65-fa736ef67dd7'
2015-12-15 12:07:00.639 MSK LOG:  duration: 1.000 ms
2015-12-15 12:07:00.648 MSK LOG:  duration: 0.000 ms  parse S_1: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:07:00.648 MSK LOG:  duration: 0.000 ms  bind S_1: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:07:00.648 MSK DETAIL:  parameters: $1 = 'Customer1', $2 = 'Position 1', $3 = '10', $4 = 'c8b2669c-044a-4a4d-acbd-31c3bcd9a783'
2015-12-15 12:07:00.648 MSK LOG:  execute S_1: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:07:00.648 MSK DETAIL:  parameters: $1 = 'Customer1', $2 = 'Position 1', $3 = '10', $4 = 'c8b2669c-044a-4a4d-acbd-31c3bcd9a783'
2015-12-15 12:07:00.648 MSK LOG:  duration: 0.000 ms
2015-12-15 12:07:00.648 MSK LOG:  duration: 0.000 ms  bind S_1: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:07:00.648 MSK DETAIL:  parameters: $1 = 'Customer2', $2 = 'Position 2', $3 = '20', $4 = '1c694f41-2ce7-4ee2-a0c0-f359690506f0'
2015-12-15 12:07:00.649 MSK LOG:  execute S_1: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:07:00.649 MSK DETAIL:  parameters: $1 = 'Customer2', $2 = 'Position 2', $3 = '20', $4 = '1c694f41-2ce7-4ee2-a0c0-f359690506f0'
2015-12-15 12:07:00.649 MSK LOG:  duration: 0.000 ms
2015-12-15 12:07:00.649 MSK LOG:  duration: 0.000 ms  bind S_1: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:07:00.649 MSK DETAIL:  parameters: $1 = 'Customer3', $2 = 'Position 3', $3 = '30', $4 = '1815947d-2604-48d4-a6be-43f6905130cf'
2015-12-15 12:07:00.649 MSK LOG:  execute S_1: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:07:00.649 MSK DETAIL:  parameters: $1 = 'Customer3', $2 = 'Position 3', $3 = '30', $4 = '1815947d-2604-48d4-a6be-43f6905130cf'
2015-12-15 12:07:00.649 MSK LOG:  duration: 0.000 ms
2015-12-15 12:07:00.649 MSK LOG:  duration: 0.000 ms  bind S_1: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:07:00.649 MSK DETAIL:  parameters: $1 = 'Customer4', $2 = 'Position 4', $3 = '40', $4 = 'cc521007-820f-4d58-8e1a-16a166aa91cf'
2015-12-15 12:07:00.649 MSK LOG:  execute S_1: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:07:00.649 MSK DETAIL:  parameters: $1 = 'Customer4', $2 = 'Position 4', $3 = '40', $4 = 'cc521007-820f-4d58-8e1a-16a166aa91cf'
2015-12-15 12:07:00.649 MSK LOG:  duration: 0.000 ms
... the rest of the logs is identical and do not provide any valuable information...

當批處理語句被禁用時（p6spy顯示沒有執行批處理），日志將如下所示： 

2015-12-15 12:09:00.246 MSK LOG:  execute <unnamed>: BEGIN
2015-12-15 12:09:00.246 MSK LOG:  duration: 0.000 ms
2015-12-15 12:09:00.246 MSK LOG:  duration: 0.000 ms  parse <unnamed>: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:09:00.246 MSK LOG:  duration: 0.000 ms  bind <unnamed>: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:09:00.246 MSK DETAIL:  parameters: $1 = 'Customer0', $2 = 'Position 0', $3 = '0', $4 = '9e085ad0-437f-4d7d-afaa-e342e031cbee'
2015-12-15 12:09:00.246 MSK LOG:  execute <unnamed>: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:09:00.246 MSK DETAIL:  parameters: $1 = 'Customer0', $2 = 'Position 0', $3 = '0', $4 = '9e085ad0-437f-4d7d-afaa-e342e031cbee'
2015-12-15 12:09:00.246 MSK LOG:  duration: 0.000 ms
2015-12-15 12:09:00.248 MSK LOG:  duration: 0.000 ms  parse <unnamed>: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:09:00.248 MSK LOG:  duration: 0.000 ms  bind <unnamed>: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:09:00.248 MSK DETAIL:  parameters: $1 = 'Customer1', $2 = 'Position 1', $3 = '10', $4 = 'f29cfa40-7d24-49a6-ae5d-2a2021932d80'
2015-12-15 12:09:00.248 MSK LOG:  execute <unnamed>: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:09:00.248 MSK DETAIL:  parameters: $1 = 'Customer1', $2 = 'Position 1', $3 = '10', $4 = 'f29cfa40-7d24-49a6-ae5d-2a2021932d80'
2015-12-15 12:09:00.249 MSK LOG:  duration: 1.000 ms
2015-12-15 12:09:00.250 MSK LOG:  duration: 0.000 ms  parse <unnamed>: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:09:00.250 MSK LOG:  duration: 0.000 ms  bind <unnamed>: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:09:00.250 MSK DETAIL:  parameters: $1 = 'Customer2', $2 = 'Position 2', $3 = '20', $4 = '067dd6d4-5060-467f-b533-75994ecbaedc'
2015-12-15 12:09:00.250 MSK LOG:  execute <unnamed>: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:09:00.250 MSK DETAIL:  parameters: $1 = 'Customer2', $2 = 'Position 2', $3 = '20', $4 = '067dd6d4-5060-467f-b533-75994ecbaedc'
2015-12-15 12:09:00.250 MSK LOG:  duration: 0.000 ms
2015-12-15 12:09:00.250 MSK LOG:  duration: 0.000 ms  parse <unnamed>: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:09:00.250 MSK LOG:  duration: 0.000 ms  bind <unnamed>: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:09:00.251 MSK DETAIL:  parameters: $1 = 'Customer3', $2 = 'Position 3', $3 = '30', $4 = '7df32327-f2f5-4011-848d-55aafb3f09fa'
2015-12-15 12:09:00.251 MSK LOG:  execute <unnamed>: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:09:00.251 MSK DETAIL:  parameters: $1 = 'Customer3', $2 = 'Position 3', $3 = '30', $4 = '7df32327-f2f5-4011-848d-55aafb3f09fa'
2015-12-15 12:09:00.251 MSK LOG:  duration: 0.000 ms
2015-12-15 12:09:00.251 MSK LOG:  duration: 0.000 ms  parse S_1: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:09:00.251 MSK LOG:  duration: 0.000 ms  bind S_1: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:09:00.251 MSK DETAIL:  parameters: $1 = 'Customer4', $2 = 'Position 4', $3 = '40', $4 = '1e55ab6a-8780-4c8f-8af2-2886d954f819'
2015-12-15 12:09:00.251 MSK LOG:  execute S_1: insert into customer (name, position, salary, id) values ($1, $2, $3, $4)
2015-12-15 12:09:00.251 MSK DETAIL:  parameters: $1 = 'Customer4', $2 = 'Position 4', $3 = '40', $4 = '1e55ab6a-8780-4c8f-8af2-2886d954f819'
2015-12-15 12:09:00.251 MSK LOG:  duration: 0.000 ms
... the rest of the logs is identical and do not provide any valuable information...

因此，兩者之間的唯一區別是當批處理被禁用時，postgres將花費更多的時間來意識到它應該重用已准備好的語句。

所以我決定運行性能測試來證實這一點。
我嘗試將30.000條記錄插入空數據庫。
禁用批處理，需要334毫秒。
啟用批處理后，耗時4650毫秒！

所以我刪除了對entityManager.flush的所有調用（只留下了entityManager.clear），時間減少到了320ms。 我不知道為什么hibernate的教程建議使用flush。 我猜這只是一個錯誤。

所以我想底線是這樣的： 批處理工作正常，但它沒有提供任何實際的好處（至少對於postgres而言）。 此外，不正確地使用它（如在教程中）可能會導致可怕的，可怕的結果。 使用風險自負，始終衡量實際性能提升。

1 個解決方案

解決方案1
 14 已采納  2015-12-14 17:43:53

您的代碼沒有任何問題，並且它正常工作。

我調試了它然后我安裝了p6spy它正在工作。 這也是你也可以這樣做的方法：

  1. 在build.gradle添加此依賴項： 

     compile 'p6spy:p6spy:2.1.4'

  2. 修改連接屬性，如下所示： 

     database.driver=com.p6spy.engine.spy.P6SpyDriver database.url=jdbc:p6spy:postgresql://localhost:5432/

  3. 在resources添加spy.properties 。 你可以從這里下載。

然后你會看到批量陳述： 

2015-12-14 19:38:03.655  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114683655|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer0', 'Position 0', 5000, '9f92ac01-8156-41f1-9bdb-36ff622a99cc')
2015-12-14 19:38:03.658  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114683658|2|statement|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer0', 'Position 0', 5000, '9f92ac01-8156-41f1-9bdb-36ff622a99cc')
2015-12-14 19:38:04.212  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684212|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer1', 'Position 1', 6000, 'e3a1dc5a-2183-4fb0-aa9a-4fb8cace23a3')
2015-12-14 19:38:04.213  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684213|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer2', 'Position 2', 7000, '8824f5be-afe5-4a6a-ab8a-8f266db5973f')
2015-12-14 19:38:04.213  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684213|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer3', 'Position 3', 8000, '249304b3-19c5-4376-b5dc-2da685c1db64')
2015-12-14 19:38:04.213  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684213|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer4', 'Position 4', 9000, '2bf15945-94c3-45f8-b0d1-e2fedbdcbaca')
2015-12-14 19:38:04.214  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684214|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer5', 'Position 5', 10000, '85b2b999-5d84-4181-9c71-1a83b4d20b86')
2015-12-14 19:38:04.214  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684214|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer6', 'Position 6', 11000, '8ed6289e-3d04-4ba5-9285-9bce202c8dae')
2015-12-14 19:38:04.215  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684215|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer7', 'Position 7', 12000, '2fc489a8-c6c4-4984-808d-2da9a2e8ad4a')
2015-12-14 19:38:04.215  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684215|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer8', 'Position 8', 13000, '897cd341-b65b-4521-87e6-f4fb78b09bfd')
2015-12-14 19:38:04.215  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684215|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer9', 'Position 9', 14000, 'fa59d5a7-2570-43f9-ba46-595b8fcefa35')
2015-12-14 19:38:04.216  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684216|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer10', 'Position 10', 15000, '0b5b38d1-d644-4ea0-a3f0-9aa025463b8a')
2015-12-14 19:38:04.216  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684216|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer11', 'Position 11', 16000, 'afbb349f-cf28-4cfb-b5b8-73b4df6fa4b1')
2015-12-14 19:38:04.216  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684216|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer12', 'Position 12', 17000, 'd6719dc4-1dfd-433f-a8ae-4c931f461e78')
2015-12-14 19:38:04.216  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684216|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer13', 'Position 13', 18000, 'ca277f3c-d51e-493d-a4f7-a945879bd7d0')
2015-12-14 19:38:04.217  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684217|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer14', 'Position 14', 19000, '07014145-332b-4b4c-b320-9412443c45b6')
2015-12-14 19:38:04.217  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684217|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer15', 'Position 15', 20000, '8ffde083-420f-418d-b624-b059b9e28f3b')
2015-12-14 19:38:04.217  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684217|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer16', 'Position 16', 21000, '6ac39900-69db-408a-bda1-4d2706da49ba')
2015-12-14 19:38:04.217  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684217|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer17', 'Position 17', 22000, '45f6db1b-18cd-4986-8f46-ce8f02d9588d')
2015-12-14 19:38:04.217  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684217|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer18', 'Position 18', 23000, 'b4312298-a818-4b7a-9cff-7923328de4dc')
2015-12-14 19:38:04.218  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684218|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer19', 'Position 19', 24000, 'efe7e3d2-da11-40ce-9fee-6f77726499db')
2015-12-14 19:38:04.218  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684218|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer20', 'Position 20', 25000, 'd51484c3-36e2-4737-b5c9-135709ad1d30')
2015-12-14 19:38:04.808  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684808|2|statement|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer20', 'Position 20', 25000, 'd51484c3-36e2-4737-b5c9-135709ad1d30')
2015-12-14 19:38:04.811  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684811|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer21', 'Position 21', 26000, '8c7e0e43-f89f-4000-8367-3406974102f4')
2015-12-14 19:38:04.811  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684811|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer22', 'Position 22', 27000, 'ab757793-1c45-4861-aff8-aa5cea3c8bd5')
2015-12-14 19:38:04.812  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684812|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer23', 'Position 23', 28000, 'edf18735-cc27-437b-9a28-156f57b51343')
2015-12-14 19:38:04.812  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684812|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer24', 'Position 24', 29000, 'c882f053-2e9a-405f-bb94-3ba83303aefe')
2015-12-14 19:38:04.812  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684812|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer25', 'Position 25', 30000, 'd6af1feb-5842-4b40-816d-8e2aaa2ce9b3')
2015-12-14 19:38:04.812  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684812|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer26', 'Position 26', 31000, '48f6a4cb-5671-4b73-bb51-3e37964fa136')
2015-12-14 19:38:04.813  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684812|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer27', 'Position 27', 32000, '6ac59ed6-2a0f-4dbb-a6d7-7231a9c9d2cc')
2015-12-14 19:38:04.813  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684813|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer28', 'Position 28', 33000, '57565a6a-4e44-4fe0-86bd-837a9687487d')
2015-12-14 19:38:04.813  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684813|0|batch|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer29', 'Position 29', 34000, 'f3c2dbdd-5d54-4bf3-86d2-327c60ee5cc0')
2015-12-14 19:38:04.814  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684814|1|statement|connection 7|insert into customer (name, position, salary, id) values (?, ?, ?, ?)|insert into customer (name, position, salary, id) values ('Customer29', 'Position 29', 34000, 'f3c2dbdd-5d54-4bf3-86d2-327c60ee5cc0')
2015-12-14 19:38:04.817  INFO 14116 --- [io-18080-exec-3] p6spy  : 1450114684817|2|commit|connection 7||

第三列是batch表示該語句是在JDBC批處理中執行的。

在提及batch之前的列表示執行語句所花費的毫秒數。 帶有0那些用於將語句添加到批處理中。

包含第3列中的statement （因此在第2列中具有1或2 ）的那些用於批處理執行時，其對應於第20次和第30次迭代。

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