It is very interesting that the date format in your log suddenly changed: 

2010-03-30 10:18:35     Script started
2010-03-30 10:18:35     Date being processed: 2010_03_18>
2010-03-30 10:18:35     Starting to gather data
2010-03-30 10:18:35     Gathering nightly data
2010-03-30 12:32:19     Inserting data to database

2010-03-30_10-18-35:    Script started
2010-03-30_10-18-35:    Date being processed: 2010_03_18
2010-03-30_10-18-35:    Gathering nightly data . . .
2010-03-30_12-32-19:  Inserting data to database

[download]

Underscore instead of space; '-'s instead of ':'s; the disappearance of the '>' from the 'Date being processed' line. And this all starts right at the start of your script before you read your data. Somebody changed something in your logging. Look there first.

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In reply to Re: out of memory exception by BrowserUk
in thread out of memory exception by siddheshsawant

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