Resource Manager Settings

Click the Magnify icon to view the NAS Administrator.

NAS 4.0 loads the database drivers for all supported databases during installation. Administrators can add or modify the resource manager for a specific database after installation using the Resource Manager tab of the Transaction screen.

The Resource Manager tab shows the name of each resource manager, for example, Microsoft SQL and its status (enabled or disabled). Click the Enabled checkbox to toggle the status for a resource manager. You must restart the server before changes to your resource manger configuration take effect.

Name

The Name field allows the administrator to enter a value to distinguish the selected resource manager from other resource managers.

Open String

The OpenString field allows administrators to enter parameters for accessing a particular database such as user name, password, or permissions. Open string formats are unique for each database vendor.

Type

Type is a drop-down menu of the available vendor databases.

Thread Mode

Thread mode is a drop-down menu. Administrators can choose from the following:

  • multiple_associations--the transaction manager XA (TM-XA) service performs no serialization of XA operations between threads.
  • serialize_all_operation--the TM-XA service permits a maximum of one thread to make an XA call to the resource manager client library at a time.
  • serialize_start_end--the TM-XA service ensures that only one association with the resource manager client library is attempted at a time.
  • single_association--the TM-XA service does not prevent multiple threads from attempting different associations at the same time.