(1)i rebuild oracle inventory, cannot slove the problem
(2)modify the persmission for iaversion, cannot slove the problem
Are you running on Run or Patch FS ?
What exactly are the errors in the adconfig.log & also do you see any changes in the NetServiceHandler.log.
Any recent changes in the environment ?
Please post the errors in Autoconfig logfile.
Open the Autoconfig log file in vi editor and search for error.
Is Autconfig failing on run or patch file system.
If its an environment working before, we can fix it for sure. Post the right error.