On 9/7/06, Nimesh Satam <[EMAIL PROTECTED]> wrote:
We also noticed that the database slow downs heavily at a particular
time..Can you suggest any tools which will help in diagnosing the root cause
behiond the data load.

possible checkpoint?  poorly formulated query?  it could be any number
of things.  use standard tools to diagnose the problem, including:

unix tools: top, vmstat, etc
postgresql query logging, including min_statement_duration
explain analyze

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TIP 9: In versions below 8.0, the planner will ignore your desire to
      choose an index scan if your joining column's datatypes do not

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