db2ilist不显示实例列表

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https://www-304.ibm.com/support/docview.wss?uid=swg21420898

DB2ilist does not return the instance

Problem(Abstract)

There are cases when db2ilist does not return any instance when run as instance owner.
Cause

Changing DB2 file permission under the install path could lead to this issue.
Resolving the problem

First try if the db2ilist command could be run as root.

1) su - root
2) cd /instance 
3) ./db2ilist

If you are able to run this as root, and if it returns all the instances created for this install path. Then check the permission on db2iset.

db2ilist internally calls db2iset and db2iset should have the following permission. Only root should have the permission to execute.

-r-xr--r-- 1 root root 173962 Oct 3 2007 db2iset

We do not recommend making any changes to db2 files as this will cause unexpected behavior.
If this does not fix the issue or if you are not able to run this as root, please engage DB2 Technical support for further assistance.