ca.portal.admin

question about numbered user exits

Discussion created by ca.portal.admin on Oct 18, 2010
Latest reply on Oct 18, 2010 by ca.portal.admin
I am reading Chris Hoelscher's article on z/IIP exploitation in
the September 2010 ""IUA Connections"" with great interest as our
site experienced the problem that he describes. Chris
indicates that the numbered user exits can contribute to
TCB/SRB swapping. We use exit 28 (security pre-processing) and
I am wondering if this could account for some of the high
swapping rate that we saw.

Here is my question: Is there any way to determine how many
times a numbered user exit is actually being executed?

Kay Rozeboom
State of Iowa
Information Technology Enterprise
Department of Administrative Services
Telephone: 515.281.6139 Fax: 515.281.6137
Email: Kay.Rozeboom@Iowa.Gov
This e-mail may contain confidential or privileged information. If
you think you have received this e-mail in error, please advise the
sender by reply e-mail and then delete this e-mail immediately.
Thank you. Aetna
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Re: question about numbered user exits
"If you have linked it with RHDCUXIT then I don't think so.

If you run it as a separate program then yes. Times Called is recorded.

D PR B$DCUX23

Program Name B$DCUX23 Ddname CDMSLIB

Type PROGRAM Type LOADLIB

Language ASM Dictname

Size (bytes) 00000192 Dictnode

ISA size 00000000 Database key NOT IN DICT

Status ENABLED AND INSRV Storage Prot NO

Dynamic NOT ALLOWED Residence IN POOL AT 17FC8A00

Reusable YES Threading CONCURRENT

Reentrant FULLY REENTRANT Overlayable YES

Tasks use ct 000 New Copy ENABLED

Times called 00000133 Times loaded 000001

PGM chk thrh 005 Pgm check ct 000

Dump thrh 000 Dump ct 000

Amode 31 Rmode ANY

PDE address 1112C9CC MPmode SYSTEM

Savearea YES Mult Enclave

=20

V126 ENTER NEXT TASK CODE: CA IDMS release 17.0 tape GJH01M node
TIDMS11E=20


Chris Trayler=20

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