APAR status
Closed as canceled.
Error description
Customer was perfoming a system upgrade: OS/390 2.8 --> OS/390 2.10 Java 1.1.8 --> Java 1.3.1 SERVICE REFRESH (SR13) ptf UQ62958 WAS 1.2 --> WAS 3.5 JDBC JDBC6612 Driver 2 --> the same but with ptfs applied for WAS 3.5 support DB2 6.1 not changed. Hardware: 9672-RA5 with 1 processor, generation 4 with 256 MB of real mem After the migration it was noticed that the CPU consumption had increased from 1.6% to 22.4% by jobs running USS scripts. These scripts use JDBC to connect to DB2.
Local fix
The ASKQ Q&A item was the first clue: RTA000167245 PRO (DATE/20011203) whose title is: What is the effect on Java servlet performance when moving from WAS 3.02 to WAS 3.5 on a G4 machine if floating point operations are used? Our customer has a Generation 4 machine without the HW feature: IEEE binary floating point support for advanced Domino and Java performance IBM recommends G5 hardware and above for use with IBM Java on z/OS SDK 130 and above. This will exploit the built in IEEE binary floating point support and avoid the costly software emulation which can increase CPU cycles and degrade system throughput.
Problem summary
Problem conclusion
Temporary fix
Comments
closing as cancelled
APAR Information
APAR number
II13339
Reported component name
PA LIB INFO ITE
Reported component ID
INFOPALIB
Reported release
001
Status
CLOSED CAN
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2002-08-12
Closed date
2012-05-23
Last modified date
2012-05-23
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Applicable component levels
[{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG19N","label":"APARs - OS\/390 environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"001","Edition":"","Line of Business":{"code":"","label":""}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG32M","label":"APARs - VSE\/ESA environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"001","Edition":"","Line of Business":{"code":"","label":""}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG19M","label":"APARs - z\/OS environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"001","Edition":"","Line of Business":{"code":"","label":""}},{"Business Unit":{"code":null,"label":null},"Product":{"code":"SG19O","label":"APARs - MVS environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"001","Edition":"","Line of Business":{"code":"","label":""}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSSN3L","label":"z\/OS Communications Server"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"001","Edition":"","Line of Business":{"code":"LOB35","label":"Mainframe SW"}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG27M","label":"APARs - z\/VM environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"001","Edition":"","Line of Business":{"code":"LOB16","label":"Mainframe HW"}}]
Document Information
Modified date:
23 May 2012