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OGG-01777 Extract abended as it ran out of sequence numbers used to create TRAIL files

发表于 2022 年 11 月 25 日 由 惜分飞

ogg extract 进程报OGG-01777 Extract abended as it ran out of sequence numbers used to create TRAIL files. The maximum number of TRAIL files allowed is 999999.
20221125124140

由于extract进程已经异常,直接对其抽取的trail文件命名新文件

--ggsci中执行
edit param eora_1  
--修改文件
EXTTRAIL ./dirdat/ab

--ggsci中执行
delete exttrail ./dirdat/aa extract eora_1
add exttrail ./dirdat/ab extract eora_1

GGSCI (xff-source) 51> info eora_1

EXTRACT    EORA_1    Last Started 2022-11-24 22:59   Status STOPPED
Checkpoint Lag       00:00:00 (updated 00:00:00 ago)
Log Read Checkpoint  Oracle Redo Logs
                     First Record         Seqno 248386, RBA 0
                     SCN 0.0 (0)

修改extract pump进程

edit params PORA_1
rmttrail ./dirdat/pc

delete rmttrail ./dirdat/pa extract PORA_1
add rmttrail ./dirdat/pc extract PORA_1
alter ext PORA_1 exttrailsource ./dirdat/ab

GGSCI (xff-source) 56> info pora_1 

EXTRACT    PORA_1    Initialized   2022-11-24 22:59   Status STOPPED
Checkpoint Lag       00:00:00 (updated 00:01:37 ago)
Log Read Checkpoint  File ./dirdat/ab000000
                     First Record  RBA 0

replcat进程处理

alter rep rep1 exttrail ./dirdat/pc

GGSCI (xff-target) 9> info rep1

REPLICAT   REP1      Initialized   2022-11-24 23:00   Status STOPPED
Checkpoint Lag       00:00:00 (updated 00:00:07 ago)
Log Read Checkpoint  File ./dirdat/pb000000
                     First Record  RBA 0

启动相关进程进行传输即可.
另外可以考虑相对简单一点操作,直接delete/add exttrail，delete/add rmttrail同名文件,省去修改param文件的麻烦,注意最终找trail文件名称和偏移量是否准确,如果不正确注意使用类似命令修改

add exttrail ./dirdat/xx, extract xxx, megabytes 1024
add rmttrail ./dirdat/xx, megabytes 1024, seqno 0 , rba 0, extract xxx
alter replicat xxx, extseqno 0, extrba 0
alter extract xxx，extseqno xxxx，extrba xxxx
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OGG-01705故障处理

发表于 2021 年 5 月 27 日 由 惜分飞

由于机器突然重启,导致ogg replicat进程启动报OGG-01705
OGG-01705

从报错信息看应该是ogg产生的Trail文件大小异常了,查看操作系统层面该文件大小
20210527124807
ogg进程启动需要读取的文件位置433622176,而操作系统层面看到的文件大小为433609363(os层面文件较小,很可能是由于os层面系统重启写丢失导致),对于这样的问题:
在11.2.1.07及其以后版本可以通过以下命令启动replicat进程,过滤掉已经在checkpoint table中已经应用的记录
参考：OGG Replicat Checkpoint RBA Is Larger than Local Trail Size- Ogg v11.2 (Doc ID 1536741.1)

start replicat <rep name> filterduptransactions

对于11.2.1.07之前版本,需要通过Logdump找出来合适的extrba,然后通过以下类似命令处理
参考：OGG Extract / Replicat Checkpoint RBA Is Larger than Local Trail Size (Doc ID 1138409.1)

alter rep < rep name>, extseqno 27506, extrba 92047.
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ogg导致v$logfile查询频繁

发表于 2018 年 11 月 16 日 由 惜分飞

在某些版本的ogg中发现ogg抽取进程对v$logfile视图查询影响比较大
20181116220104

对应的sql语句为:SELECT 1 FROM V$LOGFILE WHERE(STATUS NOT IN (‘STALE’, ‘INVALID’) OR STATUS IS NULL) AND MEMBER <> :log_name AND EXISTS ( SELECT 1 FROM V$LOG WHERE GROUP# = V$LOGFILE.GROUP# AND THREAD# = :ora_thread AND SEQUENCE# = :ora_seq_no ) AND ROWNUM = 1
查询mos发现相关问题描述:Query On V$logfile Running Excessive Number Of Times After upgrading ogg to 11.2.1.0.32 or 12.1.2.1.5 or later (Doc ID 2116395.1)和Bug 22650790 : CE 12.1.2.1.9: Query on v$logfile running excessive number of times
2116395.1
根据mos描述在ogg对应版本中设置:TRANLOGOPTIONS _ENABLESTREAMLINEDDBLOGREADER

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