IBM Support

Timed out error message during silent install

Troubleshooting


Problem

Attempts to perform a silent install of an IBM Rational product through a remote repository using Installation Manager results in the error "Resumable download failed" or "java.net.SocketTimeoutException: Read timed out".

Symptom

The GUI installation works fine and shows that the repository itself is healthy.

Cause

In GUI mode, Installation Manager will retry the network timeouts indicated by: 'java.net.SocketTimeoutException: Read Timed out' until user decides to cancel.

Diagnosing The Problem

Verify there is not a network problem to address.

Resolving The Problem

Reconfigure the Installation Manager preferences to allow silent mode to report a problem in less time.

In silent install mode, Installation Manager retries the network connection only for a limited number of times.

The associated preferences are:

  • com.ibm.cic.common.core.preferences.connectTimeout=30
  • com.ibm.cic.common.core.preferences.readTimeout=30
  • com.ibm.cic.common.core.preferences.downloadAutoRetryCount=0

Preferences are described in the Installation Manager InfoCenter:


http://publib.boulder.ibm.com/infocenter/install/v1r2/index.jsp
  • The timeouts are in seconds.
  • These are low level timeouts.
  • The first level of retries will retry timeouts for 3 times.


During silent install the next level of retries is determined by 'downloadAutoRetryCount' preference:
  • The value 0 is special and means that a single retry is attempted right away.
  • Value greater than 0 set the number of higher level retries.
  • These are each performed after a waiting period of 1 minute.

Setting 'downloadAutoRetryCount' higher than 3 and increasing the timeout values should resolve latency issues during silent installs.

Here is an example of setting downloadAutoRetryCount to 5 and keep the timeouts unchanged at 30 seconds.

After 3 lower level retries, 4 network calls have been made which add up to approximately 2 minutes. This is repeated 5 times after a waiting period of 1 minutes each. This would give a total of (first attempt + 5 retries) * (waiting period + lower level timeouts) = 6 * (1 + 2) = 18 minutes.

So with these settings, it would take Installation Manager up to 18 minutes before accepting failure.

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Document Information

Modified date:
25 October 2021

UID

swg21418662

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