Install AIS on AS400 with QSECOFR account, but find the sys repository is corrupt.

Finally we found the root cause it customer defined environment variable
QIBM_USE_DESCRIPTOR_STDIO 'I'

It changes the behavior of I/O on IFS. And normally that varaible is needed by IBM WebSphere MQ with Java and JMS environment.

After remove that ,all works fine.


Tony