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JDBC driver parameter to compress LOB/XMLs to reduce network overhead

We have a JDBC application INSERT or UPDATING a LOB/XML column. Currently this can cause transaction slowness as the INSERT or UPDATE has to wait for the uncompressed LOB to travel across network.

  • Avatar32.5fb70cce7410889e661286fd7f1897de Guest
  • Jun 12 2020
  • Future consideration
Who would benefit from this IDEA? All JDBC Db2 apps having INSERT or UPDATE of LOB/XML columns
How should it work?

1) It would be better if the JDBC driver had a configuration parameter that allowed compression of the LOB/XML subject of INSERT or UPDATE prior to transmission across the network and for Db2 for z/OS (or Db2 for LUW) to understand and decompress the LOB/XML at the other end.

Refer to case TS003549649 for example.

I note that other JDBC drivers have this functionality.

2) This would lead to reduced transaction elapsed times. In particular, "TCP/IP LOB XML MATERILIZATION WAIT" will be reduced.

3) One workaround would be for the application could compress LOB/XML column prior to INSERT or UPDATE. This may not be possible for some applications or packages.

Idea Priority Medium
Priority Justification There are a lot of JDBC Db2 apps having INSERT or UPDATE of LOB/XML columns.
Customer Name Frank McEwen, Westpac Banking Group
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