This is the reason: # db2 get db cfg for mydb | grep TSM_NODENAME TSM node name (TSM_NODENAME) = AA
# db2 update db cfg using TSM_NODENAME testlpar #db2stop; db2start # db2 backup db mydb use tsm tsm: TSMSERVER>q node testlpar TESTLPAR DB2/6000 ... The platform value changed from "AIX" to "DB2/6000"! # dsmc inc /etc/hosts tsm: TSMSERVER>q node testlpar TESTLPAR AIX ... Platform again changed back to "AIX". It is interesting that one nodename (testlpar) is used both for TSM b/a client and TSM API. When each one connects to TSM server, "platform" value is altered in TSM server side. It sounds normal in my opinoin. Am I alright? Thanks so much, Mehdi