There is a server having an interesting problem (a few other had the problem too). We think that SAP takes almost all the paging, but we cannot say that 100%, because when this problem occurs, even a "ps -ef" won't run on the system because the command will hang!
During the problem (before a reboot, because a reboot fixes the problem), how can I do a dump, that the developers later can analyze?
So far I read that if a:
is executed the AIX will do a dump and reboot after it:
-p Initiates a system dump and writes the results to the primary dump device.
Question: but is this enough? (the "sysdumpstart -p" command) Will it creates a dump that will store the SAP related infos too, to later debug?
12:root@SERVER:/root # sysdumpdev -l primary /dev/lg_dumplv ... 12:root@SERVER:/root # sysdumpdev -e Estimated dump size in bytes: 4660710604 12:root@SERVER:/root #
The lg_dumplv is 12288 MByte sized, so it should be enough.
After the reboot, I will find the dump files in the "/var/adm/ras/vmcore.x" ? Or there is an additional command to put the dump to the FS from the dump lv?