DataDirect IDMS Extensions OCA-SYSLINK
Product Description
DataDirect's IDMS Extension OCA-SYSLINK allows the implementation of a Sysplex-wide, high performance front-end/back-end architecture without the need for DDS. It makes it possible to take advantage of all the computing resources available to you. With OCA-SYSLINK, you can move workloads efficiently across any machine in your Sysplex.
Key Features
- Full CA-IDMS DML support
- Sysplex/Cross-memory services
- Low overhead
- High throughput
- Multiple front-ends on different nodes
- Multiple back-ends on different nodes
- No application changes
- ADS/Online, Cobol & Assembler
- Optional two-phase commit using OCA-Commit
- TRU using OCA-EXCI
Move resources freely across your computers
Available for CA-IDMS and CICS front-ends, DataDirect's OCA-SYSLINK makes it possible for you to take advantage of all the computing resources available in a Sysplex. With OCA-SYSLINK, you can move workloads across your Sysplex according to available resources or to quickly respond to system outages.
TRU (Transfer Run-Unit) Function
The use of the TRU function allows the transfer of a run-unit initiated by a CA-IDMS task to a CICS transaction by calling that CICS program using OCA-EXCI. All run-unit, currency and recovery information is transferred from the CA-IDMS task to the OCA-EXCI invoked CICS transaction. Furthermore, if that CICS transaction updates additional CICS resources and performs a SYNCPOINT, OCA-Commit can include the transferred run-unit in the CICS two-phase commit process.
Performance
OCA-SYSLINK was designed from the ground up for high throughput, low overhead and maximum availability. OCA-SYSLINK makes it possible to move a production front-end environment to a different Sysplex node with little impact on response time and CPU consumption. OCA-SYSLINK can use both Sysplex and Cross-memory services, depending on the location of the target back-end environment.
Backward compatibility
No application changes are required to implement an OCA-SYSLINK cluster. All standard CA-IDMS calls are supported with the exception of LRF calls. Support for LRF will be added in a later release.
