June 2018
Intermediate to advanced
478 pages
10h 52m
English
Content preview from IBM Db2 11.1 Certification Guide
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Activating the RoS feature
You can enable RoS on the HADR standby database by setting the Db2 instance-level registry variable DB2_HADR_ROS to ON and subsequently restarting the standby instance:
db2set DB2_HADR_ROS=ON
The only isolation level that is supported on the active standby database is Uncommitted Read (UR). Any application requesting more than UR will receive the SQL1773N reason code = 1 error.
You can avoid getting this message by using explicit statement isolation or by setting the Db2 instance-level registry DB2_STANDBY_ISO to UR.
ROS is not supported on the pureScale standby cluster.
Automatic Client Reroute (ACR) is a Db2 feature that can be used on an HADR database to reroute client applications from a failed database server ...
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