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Status Not under consideration
Workspace IBM i
Categories Db2 for i
Created by Guest
Created on Jul 29, 2020

Stop denial of service attack caused by using 3 part naming in a H/A environment

When I set up DB2 alias as per
and then use 3 part naming in STATIC sql it initializes a denial of service attack and makes the system unusable. IBM says it's not up to them to stop any denial of service attack. That it's up to me to stop clients from initiating any denial of service attack.

Use Case:

I have two systems: GDISYS1, GDISYS2. Both of them act as GDISYS. When GDISYS1 is primary our DNS points to GDISYS1 When GDISYS2 is primary our DNS points to GDISYS2. We handle the DB2 requests from various LPARs and other clients using
If we do something simple using dynamic SQL (such as from Run SQL Scripts)
SET FSXCMD = 'put data here'
this works. But if we put it into a stored procedure and make it static sql then it kills the system currently acting as GDISYS.

Idea priority Urgent
  • Guest
    Nov 22, 2020

    IBM does not intend to provide a solution to this request at this time, so it is being closed.

    As described in the problem ticket, the application was coded in a way that created a cyclic connection. Three alternate solutions to avoid this situation were provided.

  • Guest
    Aug 18, 2020

    The CAAC has reviewed this requirement and recommends that IBM not implement this request. There is a work-around -- fix the set-up.

    Background: The COMMON Americas Advisory Council (CAAC) members have a broad range of experience in working with small and medium-sized IBM i customers. CAAC has a key role in working with IBM i development to help assess the value and impact of individual RFEs on the broader IBM i community, and has therefore reviewed your RFE.

    For more information about CAAC, see

    For more details about CAAC's role with RFEs, see

    Nancy Uthke-Schmucki - CAAC Program Manager