IT28890: DB2ICRT MAY BE SLOW TO COMPLETE

Db2 Version 11.1 Mod 4 Fix Pack 6 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 4 Fix Pack 6 for Linux, UNIX, and Windows

APAR status

• Closed as program error.

Error description

• db2icrt may be slow to complete due to an inefficiency in the
  way ports are scanned.
  
  Db2 searches for a range of ports that are :
  * not reserved in /etc/services
  * are not actually used on the server when db2icrt is run (by an
  attempt to bind a socket on that port - that takes roughly a
  second and where the most time is spent)
  
  per example , in a worst-case conditions like opening 500 ports,
  one every 6, which resulted in no consecutive range of 6 ports
  between 60000 and 60300 being available, db2icrt can take up to
  an hour to complete.
  
  This APAR is to change the logic for port assignments during
  instance creation
  

Local fix

Problem summary

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  * USERS AFFECTED:                                              *
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  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
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  * RECOMMENDATION:                                              *
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Problem conclusion

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  DB2 FOR LUW

• Fixed component ID

  DB2FORLUW

Applicable component levels

• RB10 PSN

     UP