DB2 fix - SQL6048N A communication error occurred during START or STOP DATABASE MANAGER processing.

10 March,2016 by Jack Vamvas

Question: I attempted to complete a db2start on on a DB2 10.1.5 on Linux recently and this was the error returned.The DB2 instance did not start

03/10/2016 09:22:14     0   0   SQL6048N  A communication error occurred during START or STOP DATABASE MANAGER processing.
SQL1032N  No start database manager command was issued.  SQLSTATE=57019


What does this error mean and how can I fix the error to allow the DB2 instance starts?

Answer:   By coincidence , I had a similar problem recently when migrating a server to a test laboratory. As part of the migration the server administrator changed the hostname.

This was the first clue. When a DB2 instance starts up there is a check on the db2nodes.cfg file in the <INSTANCE_HOME>/sqllib/db2nodes.cfg .  

If a value comparison between the db2nodes.cfg and the value returned by the HOSTNAME are different , the error SQL6048N  A communication error occurred during START or STOP DATABASE MANAGER processing is returned.

You'll need to change the value in db2nodes.cfg, Typically this would be :

su - myInstance
cd <INSTANCE_HOME>/sqllib/
cp db2nodes.cfg db2nodesOriginal.cfg
vi db2nodes.cfg

Don't forget to use a fully qualified name (FQDN) if the system hostname is a FQDN

Read more on db2start

db2start at start up on Linux - DBA DB2

Check DB2 instance status

SQL5043N Support for one or more communications protocols

 

 

Author: Jack Vamvas(http://www.dba-db2.com)

Share:

Verify your Comment

Previewing your Comment

This is only a preview. Your comment has not yet been posted.

Working...
Your comment could not be posted. Error type:
Your comment has been saved. Comments are moderated and will not appear until approved by the author. Post another comment

The letters and numbers you entered did not match the image. Please try again.

As a final step before posting your comment, enter the letters and numbers you see in the image below. This prevents automated programs from posting comments.

Having trouble reading this image? View an alternate.

Working...

Post a comment on DB2 fix - SQL6048N A communication error occurred during START or STOP DATABASE MANAGER processing.

Comments are moderated, and will not appear until the author has approved them.


dba-db2.com | DB2 Performance Tuning | DBA DB2:Everything | FAQ | Contact | Copyright