Why write to an intermediate file? I would try running this directly from one DB to the other.

Is the truncate and complete dump really necessary? Maybe only a limited subset of the records need to be transfered (eg, most recent). Of course, this depends on the nature of your data but a good unique key should help.

Unless your input data is quite well behaved, it seems a bit dangerous to rely on this basic interpretation of CSV in the data import. For example, do you need to support quoted strings with commas?

In reply to Re: how can I make this faster by igelkott
in thread how can I make this faster by padawan_linuxero

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