Summary information |
|
|---|---|
Default value |
60 (seconds) |
Valid values |
1 to 2147483647 (seconds) |
Status |
Dynamic |
Display level |
10 |
Required role |
System Administrator |
xact coordination interval defines the length of time between attempts to resolve transaction branches that were propagated to remote servers.
The coordinating Adaptive Server makes regular attempts to resolve the work of remote servers participating in a distributed transaction. The coordinating server contacts each remote server participating in the distributed transaction in a serial manner, as shown in Figure 4-3. The coordination service may be unable to resolve a transaction branch for a variety of reasons. For example, if the remote server is not reachable due to network problems, the coordinating server reattempts the connection after the time specified by xact coordination level.
Figure 4-3: Resolving remote transaction branches
With the default value of xact coordination interval, 60, Adaptive Server attempts to resolve remote transactions once every minute. Decreasing the value may speed the completion of distributed transactions, but only if the transactions are themselves resolved in less than a minute. Under normal circumstances, there is no performance penalty to decreasing the value of xact coordination interval.
Setting xact coordination interval to a higher number can slow the completion of distributed transactions, and cause transaction branches to hold resources longer than they normally would. Under normal circumstances, you should not increase the value of xact coordination interval beyond its default.
