AB Suite provides support for the DMSII BUFFERS physical options for data sets and sets. These options are
BUFFERS
buffers PER USER
buffers PER RANDOM USER
buffers PER SERIAL USER
Use the following AB Suite MCP configuration properties to set up values for the options:
Data Set Buffers
Data Set Buffers
Data Set Buffers per User
Data Set Buffers per Random User
Data Set Buffers per Serial User
Set Buffers
Set Buffers
Set Buffers per User
Set Buffers per Random User
Set Buffers per Serial User
The Data Set Buffer properties are available at the segment and class levels.
The properties at the segment level serve as default values for structures that do not include the BUFFER option. The BUFFER option is not generated for a structure where
All Data Set buffer properties are zero.
All Data Set buffer properties on the class are the same as the segment.
In Developer, the Data Set Buffers, Data Set Buffers per User, Set Buffers per Random User, and Data Set Buffers per Serial User properties at the class level inherit values from the parent properties on the segment until the value at the class level is changed. This allows you to maintain the value of the Data Set buffer properties across a number of classes with minimum changes.
The Set Buffer properties are available at the segment, class, and profile level.
The properties at the segment level serves as default values for structures that do not include the BUFFER option. The BUFFER option is not generated for a structure where
All Set Buffer properties are zero.
All Set Buffer properties on the class are the same as the segment.
In Developer, the Set Buffers, Set Buffers per User, Set Buffers per Random User, and Set Buffers per Serial User at the class or profile level inherits the value from the parent properties on the segment until the value at the class or profile level is changed. This allows you to maintain the value of the Set Buffer properties across a number of classes or profiles with minimum changes.
If you choose to use Buffers Per Random User or Buffers Per Serial User, it is recommended that you set values for both properties. This ensures that there are buffers available for both types of access.
If you want to use DMSII defaults, set all buffer properties at the segment level to zero.
If you want a structure to use default values, set all buffer properties on the class or profile to zero. The BUFFERS option will not be generated for the structure and the values specified in the BUFFERS option under the DATA SET or SET default physical options is used.