SvrFailover database parameter
Description
Specifies whether you want PowerBuilder to recognize and participate
in failover to a designated backup database server if the current
database server goes down.
When to specify SvrFailover
You must specify the SvrFailover parameter before connecting
to the database.
Controls
-
ASE, SYC or SYJ Sybase
Adaptive Server Enterprise (12.0 and higher database connections
only) -
O90 Oracle9i
-
O10 Oracle 10g
-
ORA Oracle 11g
Syntax
|
1 |
SvrFailover='<span>value</span>' |
|
Parameter |
Description |
|---|---|
|
value |
Specifies whether you want PowerBuilder to
|
Default
SvrFailover=’No’
Usage
Both Oracle and Sybase support database server failover in
Oracle Version 8.1.5 or later and Adaptive Server 12 or later. For
information about how to configure failover for these database servers,
see your Oracle or Adaptive Server documentation. To avoid losing
your PowerBuilder database connection (as the result of a timeout)
when a failover takes place, set the SvrFailover parameter so that PowerBuilder recognizes
and participates in the database server failover.
Oracle also allows you some control over the failover process.
Three additional parameters allow you to specify the number of times
you want the database server to which you are connected to attempt
a failover, how long to wait between failover attempts, and whether PowerBuilder should
display a runtime dialog box indicating when a failover occurs.
This parameter cannot be set dynamically. The value set when
the connection is made remains in effect until it is disconnected.
Examples
To tell PowerBuilder to recognize and participate in
failover:
-
Database profile
Select the Allow Server Failover check box on the Network
page in the Database Profile Setup dialog box. -
Application
Type the following in code:
1SQLCA.DbParameter="SvrFailover='Yes'"