Hello: I saw this in a z/os 1.13 dump:

00 01B2 008BA3E8  SVC      9 00000000_0001A314  00000000 00040520 000400C0  
Delete                      22:25:22.551801  32
                             07741000 80000000                                  
                                           
01 01B2 008BA1C8  SVC     78 00000000_24F4135E  0000E601 00001608 008789F8  
Freemain                    22:25:22.551810  28
                             07841000 80000000                                  
                                           
00 01B2 008BA3E8  SSRV    78          8152C6B2  0000FF03 0000000C 008AB050  
Freemain                    22:25:22.551810  32
                                                01B20000                        
                                           
00 01B2 008BA3E8  SVCR     9 00000000_0001A314  00000000 00040520 000400C0      
                        22:25:22.551812  32
                             07741000 80000000                                  
                                           
00 01B2 008BA3E8  SVC      9 00000000_0001A314  00000000 00040530 000400C0  
Delete                      22:25:22.551814  32
                             07741000 80000000                                  
                                           
01 01B2 008BA1C8  DSP        00000000_24F4135C  00000000 00001608 008789F8  
00000001 00000000 01B2 01B2 22:25:22.551815  28
                             07841000 80000000                                  
                                           
00 01B2 008BA3E8  SUSP                8174CF08  00708A30 LOCL     00000000  
00000000 00000000           22:25:22.551815  32
                                                00000000                    
00000000                                       
01 01B2 008BA1C8  SVC     78 00000000_24F4135E  0000E601 00001608 008789F8  
Freemain                    22:25:22.551816  28
                             07841000 80000000                                  
                                           
01 01B2 008BA1C8  SVCR    78 00000000_24F4135E  00000000 00001608 008789F8      
                        22:25:22.551831  28
                             07841000 80000000    

It looks like the first SVC 78 at 24F4135E  never completed and was later 
retried.  I have seen   intervening trace entries from other processors between 
the start and finish of a SVC 78, but have never seen the SVC 78 repeated like 
that.  It gives the illusion that there was a  double freemain, but I   would 
think if that was the case the second SVC 78 would have encountered some type 
of x78 abend.

I am just curious if anyone else has seen a SVC 78 trace entry like above.

Thank you.

Paul                                                                       



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