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实验-修改trail文件的大小
先看原文档：
Changing the size of trail files
更改trail 文件的大小
You can change the size of trail files with the MEGABYTES option of either the ALTER EXTTRAIL
or ALTER RMTTRAIL command, depending on whether the trail is local or remote. To change
the file size, follow this procedure.
你可以通过alter 命令调整MEGABYTES 参数的值来改变trail 文件的大小，是使用ALTER EXTTRAIL
或者 ALTER RMTTRAIL要看trail 文件是在本地还是在其它地方
1. Issue one of the following commands, depending on the location of the trail,to view the
path name of the trail you want to alter and the name of the associated Extract group.
Use a wildcard to view all trails.
使用下面的命令获得你想修改trail 文件的存放地址，你的trail文件所属的组
(Remote trail)
INFO RMTTRAIL *
(Local trail)
INFO EXTTRAIL *
2. Issue one of the following commands, depending on the locationof the trail, to change
the file size.
(Remote trail)
ALTER RMTTRAIL
(Local trail)
ALTER EXTTRAIL
3. Issue the following command tocause Extract to switch to the next file in the trail.
SEND EXTRACT
-------------------------------------------------------------------------分割线---------------------------------------------------------------------------------------------------------------
源端
停止抽取进程
stop group_name
停止推送进程
stop group_name
目标端：
停止复制进程
stop group_name
在源端查看信息
GGSCI (OGG1) 64> info exttrail *
Extract Trail: /u01/ogg/dirdat/kt
Extract: GGEX
Seqno: 14
RBA: 3822
File Size: 5M
Extract Trail: /u01/ogg/dirdat/kt
Extract: GGPUMP
Seqno: 13
RBA: 3956
File Size: 5M
运行命令：
1、ALTER RMTTRAIL /u01/ogg/dirdat/kt, EXTRACT ggex, MEGABYTES 60--改成60M
2、ALTER EXTTRAIL /u01/ogg/dirdat/kt, EXTRACT ggpump, MEGABYTES 60---改成60M
3、SEND EXTRACT ggex, ROLLOVER
4、SEND EXTRACT ggpump, ROLLOVER
启动进程
start
查看是否发生改变：
GGSCI (OGG1) 91> info exttrail *
Extract Trail: /u01/ogg/dirdat/kt
Extract: GGEX
Seqno: 17
RBA: 1007
File Size: 60M
Extract Trail: /u01/ogg/dirdat/kt
Extract: GGPUMP
Seqno: 16
RBA: 1149
File Size: 60M
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