DB2 Connect-managed access to database servers that implement Distributed Relational Database Architecture (DRDA) provides the following enhancements for Version 7.
DB2 Connect Version 7.2 implements enhancements to the distributed transaction processing. This improved support greatly reduces the possibility of deadlocks that can occur when multiple COM+ components, participating in the same global transaction, attempt to access the same DB2 for OS/390 data. The support is implemented in conjunction with the lock space sharing support for DB2 for OS/3900 version 6.1 database servers delivered through the following PTFs:
As a result of these enhancements, DB2 for OS/390 V6.1 database servers are now able to recognize multiple COM+ components participating in a transaction and to share the lock space between these COM+ objects. These enhancements ensure that resource requirements of one object do not prevent another object from acquiring the resources it needs. A limitation still exists where lock space cannot be shared between multiple members in a data sharing group in a Sysplex environment.
The test connection feature of the Configure Multisite Update wizard has been expanded to permit testing of remote instances. In addition, you can associate a different user and password with each database entry in the test list. See the DB2 Connect User's Guide for more information.