The database configuration parameter LOGRETAIN must be set to RECOVERY prior to splitting the mirror if it is intended to be initialized as standby or mirror database.
如果打算将镜像初始化为备用数据库或镜像数据库，那么在分割镜像之前，必须将数据库配置参数LOGRETAIN设置为RECOVERY。
The pre splitting blasting, technical parameter, firing method and blasting effect of the project are introduced.
为确保边坡稳定，降低工程成本，采用了预裂爆破技术。
The pre splitting blasting, technical parameter, firing method and blasting effect of the project are introduced.
为确保边坡稳定，降低工程成本，采用了预裂爆破技术。
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