Summary information |
|
|---|---|
Default value |
0 (off) |
Range of values |
0 – 2 |
Status |
Static |
Display level |
Comprehensive |
Required role |
System administrator |
Configuration group |
SQL Server Administration |
Set enable HA to 1 to configure Adaptive Server as a companion server in an active-active high availability subsystem. Set enable HA to 2 to configure Adaptive Server as a companion server in an active-passive high availability subsystem.
Adaptive Server uses Sybase Failover to interact with the high availability subsystem. You must set enable HA to 1 before you run the installhasvss script (insthasv on Windows), which installs the system procedures for Sybase Failover.
The license information and the run value for enable
HA are independent of each other. Whether or not you have
a license for Sybase Failover, the run value and the config value
are set to 1 when you restart Adaptive Server. Until you have a
license, you cannot run Sybase Failover. If you have not installed
a valid license, Adaptive Server logs an error message and does
not activate the feature. See the installation guide for your platform
for information about installing license keys.
Setting enable HA to 1 or 2 does not mean that Adaptive Server is configured to work in a high availability system. You must perform the steps described in Using Sybase Failover in a High Availability System to configure Adaptive Server to be a companion server in a high availability system.
When enable HA is set to 0, you cannot configure for Sybase Failover, and you cannot run installhasvss (insthasv on Windows).
