Home Database Mysql Tutorial GoldenGate 指定时间点重新抽取事务变化

GoldenGate 指定时间点重新抽取事务变化

Jun 07, 2016 pm 04:45 PM

今天的实验是演示goldengate指定时间点重新抽取事务。

今天的实验是演示goldengate指定时间点重新抽取事务。

实验步骤:
1,制定一个重新抽取的SCN
2,,根据SCN在v$archived_log视图找到起始时间
3,停止抽取进程
4,重置抽取进程的开始时间
5,启动抽取进程重新捕获事务(从归档日志中获取)

1,查看源端当前的SCN,记录该值作为重新抽取的时间点
SQL> select dbms_flashback.get_system_change_number from dual;

GET_SYSTEM_CHANGE_NUMBER
------------------------
                1507066

2,查看当前抽取进程ex1的状态
GGSCI (node3) 2> info ex1 detail

EXTRACT    EX1      Last Started 2014-11-02 18:19  Status RUNNING
Checkpoint Lag      00:00:00 (updated 00:00:06 ago)
Log Read Checkpoint  Oracle Redo Logs
                    2014-11-02 19:09:40  Thread 1, Seqno 12, RBA 10750464
                    SCN 0.1507682 (1507682)
Log Read Checkpoint  Oracle Redo Logs
                    2014-11-02 19:09:39  Thread 2, Seqno 12, RBA 9300480
                    SCN 0.1507682 (1507682)

  Target Extract Trails:

  Remote Trail Name                                Seqno        RBA    Max MB

  /goldengate/dirdat/ex                                2    205729          5

  Extract Source                          Begin            End

  +DATA/prod/onlinelog/group_4.302.859509357  2014-11-02 18:02  2014-11-02 19:09
  Not Available                          * Initialized *  2014-11-02 18:02

Current directory    /goldengate

Report file          /goldengate/dirrpt/EX1.rpt
Parameter file      /goldengate/dirprm/ex1.prm
Checkpoint file      /goldengate/dirchk/EX1.cpe
Process file        /goldengate/dirpcs/EX1.pce
Stdout file          /goldengate/dirout/EX1.out
Error log            /goldengate/ggserr.log


3,查看当前系统时间以及目前存在的local trail文件

[oracle@single goldengate]$ ls -l dirdat
total 424
-rw-rw-rw- 1 oracle oinstall 205826 Nov  1 16:02 rt000000
-rw-rw-rw- 1 oracle oinstall  1192 Nov  1 16:57 rt000001
-rw-rw-rw- 1 oracle oinstall  1161 Nov  1 17:20 rt000002

4,在源端节点2登录测试用户snow,向测试表插入100万条记录
SYS@PROD2 > conn snow/snow

SNOW@PROD2 > begin for i in 1001..1000000 loop
  2  insert into t1 values(i,'Fin');
  3  end loop;
  4  commit;
  5  end;
  6  /

目标端snow.t1成功复制100万条记录
SQL> conn snow/snow
Connected.
SQL> select count(*) from t1;

  COUNT(*)
----------
  1000000

插入100条数据使得源端生成了22个local trail文件,从ex000003-ex000024

[oracle@node3 dirdat]$ ll
total 104128
-rw-rw-rw- 1 oracle oinstall  205795 Nov  2 17:24 ex000000
-rw-rw-rw- 1 oracle oinstall    1076 Nov  2 18:19 ex000001
-rw-rw-rw- 1 oracle oinstall 4999907 Nov  3 10:02 ex000003
-rw-rw-rw- 1 oracle oinstall 4999952 Nov  3 10:02 ex000004
-rw-rw-rw- 1 oracle oinstall 4999951 Nov  3 10:02 ex000005
-rw-rw-rw- 1 oracle oinstall 4999951 Nov  3 10:02 ex000006
-rw-rw-rw- 1 oracle oinstall 4999951 Nov  3 10:02 ex000007
-rw-rw-rw- 1 oracle oinstall 4999951 Nov  3 10:02 ex000008
-rw-rw-rw- 1 oracle oinstall 4999951 Nov  3 10:02 ex000009
-rw-rw-rw- 1 oracle oinstall 4999951 Nov  3 10:02 ex000010
-rw-rw-rw- 1 oracle oinstall 4999951 Nov  3 10:02 ex000011
-rw-rw-rw- 1 oracle oinstall 4999951 Nov  3 10:02 ex000012
-rw-rw-rw- 1 oracle oinstall 4999951 Nov  3 10:02 ex000013
-rw-rw-rw- 1 oracle oinstall 4999951 Nov  3 10:02 ex000014
-rw-rw-rw- 1 oracle oinstall 4999951 Nov  3 10:02 ex000015
-rw-rw-rw- 1 oracle oinstall 4999951 Nov  3 10:02 ex000016
-rw-rw-rw- 1 oracle oinstall 4999951 Nov  3 10:02 ex000017
-rw-rw-rw- 1 oracle oinstall 4999951 Nov  3 10:02 ex000018
-rw-rw-rw- 1 oracle oinstall 4999951 Nov  3 10:02 ex000019
-rw-rw-rw- 1 oracle oinstall 4999951 Nov  3 10:02 ex000020
-rw-rw-rw- 1 oracle oinstall 4999951 Nov  3 10:02 ex000021
-rw-rw-rw- 1 oracle oinstall 4999951 Nov  3 10:02 ex000022
-rw-rw-rw- 1 oracle oinstall 4999951 Nov  3 10:02 ex000023
-rw-rw-rw- 1 oracle oinstall 1122278 Nov  3 10:02 ex000024

5, 根据SCN1507066,查找相对应时间。

所在归档日志为红色表示记录。该日志生成的时间为2014-11-02 17:41:26,接下来采用该时间作为重新生成local trail的参数。

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
1 months ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Reduce the use of MySQL memory in Docker Reduce the use of MySQL memory in Docker Mar 04, 2025 pm 03:52 PM

This article explores optimizing MySQL memory usage in Docker. It discusses monitoring techniques (Docker stats, Performance Schema, external tools) and configuration strategies. These include Docker memory limits, swapping, and cgroups, alongside

How to solve the problem of mysql cannot open shared library How to solve the problem of mysql cannot open shared library Mar 04, 2025 pm 04:01 PM

This article addresses MySQL's "unable to open shared library" error. The issue stems from MySQL's inability to locate necessary shared libraries (.so/.dll files). Solutions involve verifying library installation via the system's package m

How do you alter a table in MySQL using the ALTER TABLE statement? How do you alter a table in MySQL using the ALTER TABLE statement? Mar 19, 2025 pm 03:51 PM

The article discusses using MySQL's ALTER TABLE statement to modify tables, including adding/dropping columns, renaming tables/columns, and changing column data types.

Run MySQl in Linux (with/without podman container with phpmyadmin) Run MySQl in Linux (with/without podman container with phpmyadmin) Mar 04, 2025 pm 03:54 PM

This article compares installing MySQL on Linux directly versus using Podman containers, with/without phpMyAdmin. It details installation steps for each method, emphasizing Podman's advantages in isolation, portability, and reproducibility, but also

What is SQLite? Comprehensive overview What is SQLite? Comprehensive overview Mar 04, 2025 pm 03:55 PM

This article provides a comprehensive overview of SQLite, a self-contained, serverless relational database. It details SQLite's advantages (simplicity, portability, ease of use) and disadvantages (concurrency limitations, scalability challenges). C

Running multiple MySQL versions on MacOS: A step-by-step guide Running multiple MySQL versions on MacOS: A step-by-step guide Mar 04, 2025 pm 03:49 PM

This guide demonstrates installing and managing multiple MySQL versions on macOS using Homebrew. It emphasizes using Homebrew to isolate installations, preventing conflicts. The article details installation, starting/stopping services, and best pra

How do I configure SSL/TLS encryption for MySQL connections? How do I configure SSL/TLS encryption for MySQL connections? Mar 18, 2025 pm 12:01 PM

Article discusses configuring SSL/TLS encryption for MySQL, including certificate generation and verification. Main issue is using self-signed certificates' security implications.[Character count: 159]

What are some popular MySQL GUI tools (e.g., MySQL Workbench, phpMyAdmin)? What are some popular MySQL GUI tools (e.g., MySQL Workbench, phpMyAdmin)? Mar 21, 2025 pm 06:28 PM

Article discusses popular MySQL GUI tools like MySQL Workbench and phpMyAdmin, comparing their features and suitability for beginners and advanced users.[159 characters]

See all articles