Problem Note 36285: Memory problems might occur with a large number of BY groups
If you are processing a large number of BY groups in PROC RELIABILITY, then memory problems may occur. Sparse data (few failures or events) in some or all of the BY groups exacerbates this problem.
In some cases, PROC RELIABILITY may terminate with an out of memory error and/or a "cannot open utility file" message.
There are no circumventions at this time other than to process smaller numbers of BY groups in separate jobs. The number of BY groups in these partitions must be determined by trial and error.
A Hot Fix is planned for this problem.
Operating System and Release Information
| SAS System | SAS/QC | z/OS | 9.2 TS1M0 | 9.2 TS2M2 |
| Microsoft® Windows® for 64-Bit Itanium-based Systems | 9.2 TS1M0 | 9.2 TS2M2 |
| Microsoft Windows Server 2003 Datacenter 64-bit Edition | 9.2 TS1M0 | 9.2 TS2M2 |
| Microsoft Windows Server 2003 Enterprise 64-bit Edition | 9.2 TS1M0 | 9.2 TS2M2 |
| Microsoft Windows XP 64-bit Edition | 9.2 TS1M0 | 9.2 TS2M2 |
| Microsoft® Windows® for x64 | 9.2 TS1M0 | 9.2 TS2M2 |
| Microsoft Windows Server 2003 Datacenter Edition | 9.2 TS1M0 | 9.2 TS2M2 |
| Microsoft Windows Server 2003 Enterprise Edition | 9.2 TS1M0 | 9.2 TS2M2 |
| Microsoft Windows Server 2003 Standard Edition | 9.2 TS1M0 | 9.2 TS2M2 |
| Microsoft Windows XP Professional | 9.2 TS1M0 | 9.2 TS2M2 |
| Windows Vista | 9.2 TS1M0 | 9.2 TS2M2 |
| 64-bit Enabled AIX | 9.2 TS1M0 | 9.2 TS2M2 |
| 64-bit Enabled HP-UX | 9.2 TS1M0 | 9.2 TS2M2 |
| 64-bit Enabled Solaris | 9.2 TS1M0 | 9.2 TS2M2 |
| HP-UX IPF | 9.2 TS1M0 | 9.2 TS2M2 |
| Linux | 9.2 TS1M0 | 9.2 TS2M2 |
| Linux for x64 | 9.2 TS1M0 | 9.2 TS2M2 |
| OpenVMS on HP Integrity | 9.2 TS1M0 | 9.2 TS2M2 |
| Solaris for x64 | 9.2 TS1M0 | 9.2 TS2M2 |
*
For software releases that are not yet generally available, the Fixed
Release is the software release in which the problem is planned to be
fixed.
A fix for this issue for SAS/QC 9.21 is available. However, if you install SAS Maintenance after applying this hot fix, files delivered in the hot fix will not receive the proper Maintenance update. Please contact SAS Technical Support at the link shown below for information on accessing the hot fix.
http://support.sas.com/techsup/contact/index.html
If you are processing a large number of BY groups in PROC RELIABILITY then memory problems may occur. Sparse data (few failures or events) in some or all of the BY groups exacerbates this problem.
| Type: | Problem Note |
| Priority: | medium |
| Topic: | Analytics ==> Reliability Analysis
Analytics ==> Survival Analysis
SAS Reference ==> Procedures ==> RELIABILITY
|
| Date Modified: | 2009-10-11 17:59:32 |
| Date Created: | 2009-06-18 18:30:51 |
