Check OGG until no data queuing in replication process:testRO:a)login test5 –l oggmgrb)oggc)#ggsci> lag *check lag=0{note: when check lag result = 0, proceed next step] [GGSCI的lag命令可以查询复制延迟, 如: GGSCI> lag <replicat>](At EOF, no more reco…
It is great to be able to build small utilities on top of an excellent RDBMS. Thank you MySQL. This is a small but complex utility to perform online schema change for MySQL. We call it OSC and the source is here. Some ALTER TABLE statements take too…
[参考]自百度百科 数据库中的Schema,为数据库对象的集合,一个用户一般对应一个schema. 官方定义如下: A schema is a collection of database objects (used by a user.). schema objects are the logical structures that directly refer to the database’s data. A user is a name defined in the database t…
百度文库中 Schema 的解释: 数据库中的Schema,为数据库对象的集合,一个用户一般对应一个schema. 官方定义如下: A schema is a collection of database objects (used by a user.). schema objects are the logical structures that directly refer to the database’s data. A user is a name defined in the da…
http://severalnines.com/blog/online-schema-upgrade-mysql-galera-cluster-using-toi-method As a follow-up to the Webinar on Zero Downtime Schema Changes in Galera Cluster, we’ll now walk you through the detailed steps on how to update your schema.…
