参考链接 http://blog.itpub.net/29475508/viewspace-1248530/ Oracle 11g DataGuard 数据保护模式切换 Data Guard 提供三种数据保护模式：最大保护（Maximum Protection），最高可用（Maximum Availability）和 最高性能（Maximum Performance）。如果按照...

错误现象 [root@jituan-xiaofei-docker01 ~]# resize2fs /dev/centos/rootresize2fs 1.42.9 (28-Dec-2013)resize2fs: Bad magic number in super-block while trying to open /dev/centos/rootCouldn't find vali...

mysqldump报错如下：mysqldump: [Warning] Using a password on the command line interface can be insecure.mysqldump: Couldn't execute 'SELECT COLUMN_NAME,                       JSON_EXTRACT(HISTOGRAM, '$.&quo