Adabas Caching can be used to improve system performance by augmenting the Adabas buffer pool in extended memory, data spaces, hiperspace and, in selected environments, 64-bit virtual storage, as well as 64-bit virtual backed by large pages which is enabled using the IBM z/OS Large Page Support provided with IBM z/OS 1.9 or above and enabled on the z10 IBM mainframe processor.
Adabas Caching Version 8.2 provides support for Virtual 64 storage backed by large pages in those environments that support this type of storage. When Virtual 64 storage is used, the controlling structures for ADACSH are also moved into Virtual 64 storage, thus removing some of the storage constraints when using very large cache spaces.
For a complete list of the environments supported by Adabas Caching Version 8.2, see the section Supported Environments.
This document lists the Adabas Caching 8.2 enhancements.
| Category | Enhancements |
|---|---|
| Adabas Caching 8.2 SP3 Enhancements | Support for Two-Gigabyte Large Pages in z/OS |
| Adabas Caching 8.2 SP2 Enhancements | Statistics Integrated into webMethods Optimize for Infrastructure |
In release 8.2 SP3, Adabas Caching provides support for two-gigabyte (2G) large pages, when it is run in a z/OS environment that also supports 2G large pages. This support is provided in addition to the existing support of 1M large pages.
The following new ADARUN parameters have been added or changed to support 2G large pages:
CASSOG64 -- The new ADARUN parameter identifies one or more Associator RABNs to be cached in virtual 64-bit storage backed by 2G large pages.
CDATAG64 -- This new ADARUN parameter identifies one or more Data Storage RABNs to be cached in virtual 64-bit storage backed by 2G large pages.
CFILE -- This ADARUN parameter has been altered to support a value of "G64" or "G" (representing virtual 64-bit storage backed by 2G large pages) as the type of cache storage to be used for RABN caching.
CSTORAGE -- This ADARUN parameter has been altered to support a value of "G64" that supports the caching of all database RABNs in virtual 64-bit storage backed by 2G large pages.
CWORKSTORAGE -- This ADARUN parameter has been altered to support a value of "G64" that supports the caching of CWORK2FAC (Work part 2) and CWORK3FAC (Work part 3) in virtual 64-bit storage backed by 2G large pages.
For more information about these ADARUN parameters, read Parameter Descriptions.
In release 8.2 SP2, Adabas Caching key performance indicator (KPI) statistics are now provided to webMethods Optimize for Infrastructure. Using the Optimize component of webMethods Optimize for Infrastructure, you can monitor the status of these statistics as well as the overall status of your system. This support is available in version 8.2 (and later versions) of webMethods Optimize for Infrastructure.
See Adabas Caching Installation for the steps required to install Adabas Caching.
Important:
Before installing and using Adabas Caching, ensure that all
Prerequisites
have been met.
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