Web dispatcher kernel upgrade issue

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Hi

We are upgrading our web dispatcher from 720 - patch 24 to 720 - patch 80. after the kernel upgrade we get the below issue

[Thr 47003381003296] *** ERROR => ShmCreate: Invalid size. Key=63 Size=86040 [shmux_mt.c 1437]

[Thr 47003381003296] *** ERROR => IcmShmCreate: ShmCreate(63, 86040) failed 2 [icxxshm_mt.c 284]

[Thr 47003381003296] ShmCleanup SHM_ICM_MAN

[Thr 47003381003296] ShmCleanup( 63 )

[Thr 47003381003296] ShmProtect( 63, 3 )

[Thr 47003381003296] ShmProtect: shmat key 63 prot 3/0 done

[Thr 47003381003296] ShmCreate( 63, 0, 2, -> 0x2abfd4b47000 )

[Thr 47003381003296] ShmKeyPermission( 63 ) = 0740 (octal)

[Thr 47003381003296] ShmProtect( 63, 3 )

[Thr 47003381003296] ShmProtect: shmat key 63 prot 3/0 done

[Thr 47003381003296] ShmCreate( 63, 86040, 1, -> 0x2abfd4b4c000 )

[Thr 47003381003296] Statistic Level: 1

[Thr 47003381003296] IcmInit: Attach to DP disabled

[Thr 47003381003296] IcmBufInit: mpi totalSz / bufferSz = 524288000 / 65536

[Thr 47003381003296] MPI: max. number of pipes = 21000

[Thr 47003381003296] MPI: max. pipe size = 128000 KB

[Thr 47003381003296] MPI: dynamic quotas disabled.

[Thr 47003381003296] MPI: reserved quota (percent total space) = 30% (2398 buffers)

[Thr 47003381003296] MPI init: pipes=21000 buffers=7994 reserved=2398 quota=10%

[Thr 47003381003296] SemKeyPermission( 52 ) = 0740 (octal)

[Thr 47003381003296] ShmKeyPermission( 62 ) = 0740 (octal)

[Thr 47003381003296] *** ERROR => shmget(10162,537951072,480) (22: Invalid argument) [shmux_mt.c 1532]

[Thr 47003381003296] *** ERROR => ShmCreate( ATTACH 62, 537951072) failed 1 [mpixx_mt.c 1064]

[Thr 47003381003296] *** ERROR => IcmBufInit: MpiInit failed (rc=1) [icxxbuf_mt.c 189]

[Thr 47003381003296] *** ERROR => IcmInit: IcmBufInit failed (rc=1) [icxxrout_mt. 2112]

[Thr 47003381003296] *** SAP Web Dispatcher shutdown completed (pid: 30780) ***

[Thr 47003381003296] ***LOG IM2=> IcmMain, Shutdown (SAP Web Dispatcher&westbrook.atldc.nscorp.com&30780&) [icxxrout_mt. 829]

Not which parameter has to be changed to make the "ERROR => ShmCreate: Invalid size. Key=63 Size=86040 " size change.

our server has 8GB RAM and 10GB swap space

Regards

Senthil