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TechTalk: Improve ODBC Performance

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You can significantly speed up your Open Database Connectivity (ODBC) database access if you are using the Wall Data ODBC driver by selecting the option to cache statistics locally. This can be done when you sign on to a data source by clicking on the Options button. Put a check in the Cache Statistics Locally box and specify a number of days for the refresh interval (see 1).

You can significantly speed up your Open Database Connectivity (ODBC) database access if you are using the Wall Data ODBC driver by selecting the option to cache statistics locally. This can be done when you sign on to a data source by clicking on the Options button. Put a check in the Cache Statistics Locally box and specify a number of days for the refresh interval (see Figure 1).

Every time ODBC connects to a data source or reads a file, it gathers information about the data source or file. This can take a long time. Storing the statistics locally will allow the ODBC driver to keep the information on the local PC, reducing the communication overhead and host processing time.

The refresh interval is useful if your database changes. The Wall Data driver will refresh the statistics to be sure the information stored locally correctly reflects the current database layout. The database layout will not change often unless you are doing development work and changing the layout of files frequently. For most production software, the layout shouldn't change unless you upgrade to a new version.

- Brian Singleton

TechTalk: Improve ODBC Performance

Figure 1: ODBC Data Source Settings

Brian Singleton
Brian Singleton is former editor of Midrange Computing. He has worked in the IBM midrange arena for many years, performing every job from backup operator to programmer to systems analyst to technology analyst for major corporations and IBM Business Partners. He also has an extensive background in the PC world. Brian also developed a line of bestselling Midrange Computing training videos, authored the bestselling i5/OS and Microsoft Office Integration Handbook, and has spoken at many popular seminars and conferences.

MC Press books written by Brian Singleton available now on the MC Press Bookstore.

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