webMethods Adapter for Terracotta DB Documentation 10.3 | webMethods Adapter for Terracotta DB Documentation | Adapter for Terracotta DB Connections | Configuring an Adapter for Terracotta DB Connection
 
Configuring an Adapter for Terracotta DB Connection
When you configure Adapter for Terracotta DB , you specify information that Integration Server uses to connect to an Terracotta store. You can configure Adapter for Terracotta DB connections manually using the Integration Server Administrator screen.
* To configure an adapter connection
1. In the Adapters menu of Integration Server Administrator's navigation area, click webMethods Adapter for Terracotta DB.
2. In the Connections screen, click Configure New Connection.
3. In the Connection Types screen, click webMethods Adapter for Terracotta DB Connection to display the Configure Connection Type screen.
4. In the webMethods Adapter for Terracotta DB section, use the following fields:
Field
Description/Action
Package
The package in which to create the connection. You must create the package using Designer before you can specify the package using this parameter. For general information about creating packages, see the webMethods Service Development Help for your release.
Note: Configure the connection in a user-defined package rather than in the adapter's package. For other important considerations when creating packages for Adapter for Terracotta DB, see Adapter for Terracotta DB Package Management
Folder Name
Specifies the folder in which you create the connection.
Connection Name
Specifies the name you want to give to the connection. Connection names cannot have spaces or use special characters reserved by Integration Server and Designer. For more information about the use of special characters in package, folder, and element names, see the webMethods Service Development Help for your release.
5. In the Connection Properties section, use the below field:
Field
Description/Action
Terracotta DB URI
The URI which is passed takes the form, terracotta://server1:port,server2:port,...,serverN:port, where the URI stands for URI of the cluster.
Connection TimeOut(sec)
Defines the timeout value in seconds, when you connect to Terracotta DB cluster the first time. The default value is 20 seconds.
ReConnect TimeOut(sec)
Defines the timeout value in seconds to reconnect to the server, when the server connection disappears during the operation. The default value is 20 seconds.
DatasetCache Size
Specifies the number of datasets to be cached to improve the performance. The default value is 20. If you specify the value as 0, then no cache is created.
Secured Directory Path
Specify the path to security root directory to use the connection. For more information, refer the SSL/TLS Security Configuration section of Terracotta in Terracotta Server Administration Guide.
Note: ReConnect TimeOut(sec), DatasetCache Size, Secured Directory Path are connection properties specific to Terracotta DB 10.2
6. In the Connection Management Properties section, use the following fields:
Field
Description/Action
Enable Connection Pooling
Enables the connection to use connection pooling. For more information about connection pooling, see Adapter Connections.
Note: If you plan to enable connection pooling in a clustered environment, consider the connection pool size.
Minimum Pool Size
If connection pooling is enabled, this field specifies the number of connections to create when the connection is enabled. The adapter will keep open the number of connections you configure here regardless of whether these connections become idle.
Maximum Pool Size
If connection pooling is enabled, this field specifies the maximum number of connections that can exist at one time in the connection pool.
Pool Increment Size
If connection pooling is enabled, this field specifies the number of connections by which the pool will be incremented if connections are needed, up to the maximum pool size.
Block Timeout
If connection pooling is enabled, this field specifies the number of milliseconds that Integration Server will wait to obtain a connection before it times out and returns an error. For example, you have a pool with Maximum Pool Size of 20. If you receive 30 simultaneous requests for a connection, 10 requests will be waiting for a connection from the pool. If you set the Block Timeout to 5000, the 10 requests will wait for a connection for 5 seconds before they time out and return an error. If the services using the connections require 10 seconds to complete and return connections to the pool, the pending requests will fail and return an error message stating that no connections are available. If you set the Block Timeout value too high, you may encounter problems during error conditions. If a request contains errors that delay the response, other requests will not be sent. This setting should be tuned in conjunction with the Maximum Pool Size to accommodate such bursts in processing.
Expire Timeout
If connection pooling is enabled, this field specifies the number of milliseconds that an inactive connection can remain in the pool before it is closed and removed from the pool. The connection pool will remove inactive connections until the number of connections in the pool is equal to the Minimum Pool Size. The inactivity timer for a connection is reset when the connection is used by the adapter.
If you set the Expire Timeout value too high, you may have a number of unused inactive connections in the pool. This consumes local memory and a connection on your backend resource. This could have an adverse effect if your resource has a limited number of connections.
If you set the Expire Timeout value too low, performance could degrade because of the increased activity of creating and closing connections. This setting should be tuned in conjunction with the Minimum Pool Size to avoid excessive opening/closing of connections during normal processing.
Startup Retry Count
The number of times that the system should attempt to initialize the connection pool at startup if the initial attempt fails. The default is 0.
Startup Backoff Timeout
The number of seconds that the system should wait between attempts to initialize the connection pool.
7. Click Save Connection.
The connection you created appears on the adapter's Connections screen and in Designer.
You can enable a connection only if the parameters for the connection are valid.
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