关于HADR的典型案例、切换方式、切换后回切的疑问？
请问一下：
1.HADR的典型最佳实践案例？
2.切换方式与案例？同步时延，基础环境条件（网络带宽、数据量、交易并发量）？
3.如果故障交易从主机切至备机，那同步机制如何变化？以及如何切换后回切？
查看其它 1 个回答仙道彰的回答
给你回答一个HADR启停的吧，
db2haicu -disable
db2pd -db xxx -hadr
Shutdown the HADR operation
A: Deactivate the primary database
db2 deactivate database sample
B: Stop DB2 on the primary database
db2stop force
C: Deactivate the standby database
db2 deactivate database sample
D: Stop DB2 on the standby database
db2stopStart the HADR operation
A: db2 activate database sample ----standby database
or
db2 start hadr on database sample as standby
B: db2 activate database sample ----primary database
or
db2 start hadr on database sample as primary
or
db2 connect to sampledb2haic带有HADR环境的升级
- Secondary server:
deactivate database <db_name>
db2stop
install fixpack/upgrade
db2start
db2 activate database <db_name> Primary server:
先把HADR切换到secondary server（在secondary server, TAKEOVER HADR ON DATABASE)
deactivate database
db2stop
install fixpack/upgrade
db2start
db2 activate database <db_name> u -enabledb2pd -db xxx -hadr