rac一节点本地安装的ogg，添加启动extract进程报错ogg-00868：
ERROR OGG-00868 The number of Oracle redo threa
ds (2) is not the same as the number of checkpoint threads (1). EXTRACT
groups on RAC systems should be created with the THREADS parameter (e.
g., ADD EXT , TRANLOG, THREADS 2, BEGIN…).

添加方式：add extract eora_1,tranlog,threads 1,begin now
有什么解决办法么