Reading Spectrum Data Change Records

Reading Spectrum Data Change Records

Overview

The SH-HISTORY and LN-HISTORY datasets (HISTRY database) contain data change records that are stored in a binary format. AskPlus provides two special functions designed to read and interpret these records. To use these functions the datachng.sl (or .so Itanium) must be installed in the /ASKPLUS directory. An AskPlus job is also available that extracts specific data change records based on their TYPE and ENTRY-DATE.

Installing the Data Change Files

The data change library file and the extract job are provided in a single gz download. Choose the pa32 file for PARISC and the it64 file for Itanium. Transfer the gz file to the /ASKPLUS directory on UNIX and execute the command.

gunzip datachange_pa32.gz

or

gunzip datachange_it64.gz

The library file (datachng.sl or datachng.so) must remain in the /ASKPLUS directory. The extract job (ask_datachange_job) may be moved to any location and may be renamed.

Editing the Job Parameters

The listener job can be shutdown using the host command KILLVSRV. The syntax is:

KILLVSRV.PUBTCP.ASKPLUS -password

The password must match the password in the VSRVINI file for the VSRVMGR Manager.