Hello Everyone,
We are experiencing a very bad performance on IBM System I during a database export (hetereogeneous systemcopy) of a SAP ERP EHP7 system.
Using the latest kernel (742 and SWPM (17) we started the export, but phase R3SZCHK does not come to an end. After 18 hours of running that phase without any data, we stopped SWPM and restarted it. And again: it did not succeed. This time we stopped it already after 12 hours.
On other System I systems we had this phase at about 1 to 3 hours, but have never seen it at more than 10 hours.
We can see that CPU (4) is very busy (100 % CPU) and that disks are working quite well, but cannot figure out what's going wrong here. As well we could not find any SAP Notes pointing to a situation like this on System I.
Any hint how to solve this situation? Thanks in advance for any kind of hint and help.
Kind Regards,
Carsten Loeffler
