IC89283: LATENCY ISSUES WITH INCREASED UPDATE LOADS

7.0 Fix Pack 5 download information for IBM solidDB

APAR status

• Closed as program error.

Error description

• In solidDB V7.0 FP3, when increasing the UPDATE or other
  write-type load in tables
  that have large column sizes, the response time grows.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All users.                                                   *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to solidDB server and ODBC driver to IBM solidDB     *
  * V7.0 Interim Fix 7.                                          *
  ****************************************************************
  

Problem conclusion

• Fix is included in IBM solidDB V7.0 Interim Fix 7.
  
  A new server startup option and client-side (ODBC) configuration
  parameter have been added to set the limit after which memory
  allocations start to use system memory instead of the solidDB
  internal allocator.
  
  solidDB server startup option
  -xmaxslotalloc:<size_in_bytes> Default is 8192.
  
  Client-side configuration parameter
  [Client]
  MaxSlotAlloc=<size>; Default 8 K.
  
  By increasing the server-side and client-side setting for memory
  slot allocation, write transactions in tables that have large
  column sizes no longer increase latency. For example, in tables
  with 13 K column sizes, setting the memory slot allocation on
  both server and client side to 16384/16 K, the response times
  for UPDATEs are improved.
  

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

  SOLIDDB-DB2/IDS

• Fixed component ID

  5724V1700

Applicable component levels

• R700 PSY

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