A fix is available
APAR status
Closed as program error.
Error description
An error occurs while an application is running. CICS intercepts the abend and calls Language Environment's program_ check_recovery process. LE discovers a problem with it's storage areas and returns a RC8 back to CICS. CICS inturn requests a DFHAP1301 informational message, but on the call from DFHAPLI1 to DFHMEME, the addressability for the DFHMEME domain parameter list has not been set. This can lead to various overlays of about 246 bytes depending where the MEME parmlist pointer is pointing. When DFHAPLI1 calls the message domain, the DFHMEME parameter list is stored in DFHAPLI1's stack entry. Usually this is where the DFHMEME parmlist pointer is residualy pointing, but the address could be anywhere. The overlay will not contain recognizable user data, but it will contain the DFHMEME parmlist that will look like this : x'00F80000 00000026 00000001 00000000 B4800200 00000000 01000100 00000000 00000000 00000515 00000000 00000000' The overlay can potentially start on a byte boundary. DFHAPLI1 will need to re-establish addressability to the DFHMEME domain paramter list prior to macking the AP1301 call. Additional symptoms: CICS hang, loop, or abend0C4 's in DFHSIP. The 0C4 's are reported by IEA995I messages. The 0C4s actually occur in DFHKERER who fails repeatedly trying to record the errors. However, the Kernel anchor block ( KCB ) has been overlaid with the DFHAP1301 parameter list. The KCB is generally located at address 7000 but shows the same parm list: . 00007000 00F80000 00000026 00000001 00000000 00007010 B4800200 00000000 01000000 00000000 00007020 00000000 00000515 00000000 00000000 . S0C4 abendS0C4 IEA995 loops looping abend0F9 0F9 S0F9
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All * **************************************************************** * PROBLEM DESCRIPTION: After CICS issued msgDFHAP1301, an * * overlay of about 246 bytes of storage * * can result in program checks in the * * kernel domain (DFHKEDCL and DFHKERER) * * that end with a U1800 abend. * **************************************************************** * RECOMMENDATION: * **************************************************************** When DFHAPLI1 issues message DFHAP1301 after a call to LE for program_check_recovery returns with RC=8, it assumes that R5 addresses the CICS message domain parameter list. Depending on what R5 is pointing to, various unpredictable errors can result, including an abendU1800. Keywords: AP1301 MEME meme_parms
Problem conclusion
DFHAPLI1 has been changed so that R5 addresses the message domain parameter list before issuing message DFHAP1301.
Temporary fix
********* * HIPER * ********* FIX AVAILABLE BY PTF ONLY
Comments
APAR Information
APAR number
PM18178
Reported component name
CICS TS Z/OS V4
Reported component ID
5655S9700
Reported release
600
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt
Submitted date
2010-07-09
Closed date
2010-08-31
Last modified date
2010-10-15
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UK60140
Modules/Macros
DESLI1 DFHAPLI1 DFHAPLJ1 DFHAPLX1
Fix information
Fixed component name
CICS TS Z/OS V4
Fixed component ID
5655S9700
Applicable component levels
R600 PSY UK60140
UP10/09/03 P F009
Fix is available
Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.
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Document Information
Modified date:
15 October 2010