OGG-00446 分析与解决

1. 00446
- 1.1. Missing filename opening checkpoint file
  - 1.1.1. 错误信息
  - 1.1.2. 分析
- 1.2. could not find archived log
  - 1.2.1. 错误信息
  - 1.2.2. 分析

1 00446

OGG 的一些错误编号，包含了很多种不同的原因。00446 就是这样的一种，不同的原因有不同的提示。本文包含两种：

Missing filename opening checkpoint file
could not find archived log

下面看分析与解决方法。

1.1 Missing filename opening checkpoint file

1.1.1 错误信息

2019-07-02T23:26:17.998+0800  ERROR   OGG-00446  Oracle GoldenGate Delivery, xmsys.prm:  Missing filename opening checkpoint file.
2019-07-02T23:26:17.999+0800  ERROR   OGG-01668  Oracle GoldenGate Delivery, xmsys.prm:  PROCESS ABENDING.

1.1.2 分析

出现此错误，原因是参数配置与命令不匹配。比如from file方式的数据应用进程,如果使用ggsci命令start命令来启动, 则会出现这种错误。下面是两则安全，根本原因都是命令与参数配置不匹配，一种是初始化，一种是实时应用。

参数配置 以下配置为一例 ogg for kafka 的 From File 方式初始化应用进程的配置。

  SPECIALRUN    -- 此行为重点
END RUNTIME
SETENV(nls_lang="AMERICAN_AMERICA.ZHS16GBK")
targetdb libfile libggjava.so set property=dirprm/xmins.props
EXTFILE dirdat/ii
reportcount every 1 minutes , rate
grouptransops 10000

启动命令
```
start initsp
```

日志

  .........
2019-07-02T23:26:15.409+0800  INFO    OGG-01360  Oracle GoldenGate Delivery, xmsys.prm:  REPLICAT is running in Special Run mode.
2019-07-02T23:26:15.615+0800  INFO    OGG-15052  Oracle GoldenGate Delivery, xmsys.prm:  Using Java class path: ggjava/ggjava.jar:ggjava/resources/lib/optional/log4j-api-2.9.1.jar:ggjava/resources/lib/optional/log4j-core-2.9.1.jar:ggjava/resources/lib/optional/log4j-slf4j-impl-2.9.1.jar.
2019-07-02T23:26:17.988+0800  INFO    OGG-01815  Oracle GoldenGate Delivery, xmsys.prm:  Virtual Memory Facilities for: COM
                                  anon alloc: mmap(MAP_ANON)  anon free: munmap
                                  file alloc: mmap(MAP_SHARED)  file free: munmap
                                  target directories:
                                  /home/ogg/dirtmp.
2019-07-02T23:26:17.998+0800  ERROR   OGG-00446  Oracle GoldenGate Delivery, xmsys.prm:  Missing filename opening checkpoint file.
2019-07-02T23:26:17.999+0800  ERROR   OGG-01668  Oracle GoldenGate Delivery, xmsys.prm:  PROCESS ABENDING.

解决通过操作系统命令 replicat 执行初始化:

$OGG_HOME/replicat paramfile $OGG_HOME/dirprm/xmsys.prm

参数配置

  passthru
rmthost 192.168.153.129, mgrport 7809
rmttrail /u02/ggs/dirdat/td
gettruncates
table scott.*;
sequence scott.*;

分析第一行应为:
```
extract test
```

1.2 could not find archived log

1.2.1 错误信息

在ggserr.log 中发现如下错误:

2019-05-31t10:56:53.629+0800  error   ogg-00446  oracle goldengate capture for oracle, extxmdev.prm:  could not find archived log for sequence 2649 thread 1 under default destinations sql <select  name    from v$archived_log   where sequence# = :ora_seq_no and         thread# = :ora_thread and         resetlogs_id = :ora_resetlog_id and         archived = 'yes' and         deleted = 'no' and         name not like '+%'         and standby_dest = 'no' >, error retrieving redo file name for sequence 2649, archived = 1, use_alternate = 0not able to establish initial position for sequence 2649, rba 13816848.
2019-05-31t10:56:53.641+0800  error   ogg-01668  oracle goldengate capture for oracle, extxmdev.prm:  process abending.

1.2.2 分析

从错误信息提示来看，是归档日志找不到引起的中断。经查看归档日志确实不存在。已被物理删除。且没有备份。

数据不重要

此时可以修改extract 的起始值,跳过缺失的归档文件，这在测试和开发环境中应用较多。首先查看可用归档:

select sequence# ,first_change#, next_change# ,deleted,applied,status from v$archived_log;

 sequence# first_change# next_change# del applied   s
---------- ------------- ------------ --- --------- -
      3759      16360310     16401138 yes no        a
      3760      16401138     16419033 no  no        a

从上面的查询结果来看，3759号归档已被删除，最新可用归档是3760. 对应最早的 scn号是16401138. 将extract 进程的scn 值调整至16401138:

alter extrace extxmdev, scn 16401138
start ext extxmdev

数据重要

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