APAR status
Closed as program error.
Error description
Bounded length fields use storage equal to their max length instead of the actual data length, causing persistent datasets to use more storage than necessary.
Local fix
This fix is included in 8.0.1 fixpack 3
Problem summary
**************************************************************** USERS AFFECTED: Users of parallel jobs in InformationServer 7.x and above. **************************************************************** PROBLEM DESCRIPTION: Bounded length fields in parallel jobs are treated as fixed length for performance reasons. This can make storing persistent datasets take up much more storage on disk than the actual data requires. **************************************************************** RECOMMENDATION: Install patch JR33508 This change is included in 8.1 Fix Pack 1. ****************************************************************
Problem conclusion
An environment variable was added APT_COMPRESS_BOUNDED_FIELDS. When set bounded length fields will be modified into variable length for disk storage and then back to bounded length when read from disk. Depending on the record schema this can result in a large savings in the size of the persistent data files. Itdoes require extra processing time during the reading and writing of the data files. This is the trade off for the space reduction. This environment variable should only be set when creating new datasets, it should not be set when appending to existing datasets.
Temporary fix
Comments
APAR Information
APAR number
JR33508
Reported component name
WIS DATASTAGE
Reported component ID
5724Q36DS
Reported release
801
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2009-06-29
Closed date
2009-08-19
Last modified date
2010-12-09
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Modules/Macros
SERVER
Fix information
Fixed component name
WIS DATASTAGE
Fixed component ID
5724Q36DS
Applicable component levels
R801 PSN
UP
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Document Information
Modified date:
09 December 2010