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We have set up a portal using Yii Framework in Apache, PHP and MySQL. In the portal, there is a feature to export the data in dbf format, the extract takes around 7 minutes, but in those 7 minutes no other user can do anything in portal, not even login.

All tables are in MyISAM Engine.

I cannot provide you the link as its in our internal server.

Server is 4core Xeon Processor with 32 GB Ram.

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The framework calls somewhere, somehow the command mysqldump, and there you need to give him the --lock-tables=false option.

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  • Hi, thanks for replying, but that didn't work. currently mysqldump config is as below: [mysqldump] quick max_allowed_packet = 16M lock-tables=false
    – Himanshu
    May 29, 2014 at 9:25
  • Hi, I found the root cause for this, its because we are using the same yiibase for all portals for different countries, but thanks for the lock table suggestion, it helped me a little in performance :)
    – Himanshu
    May 30, 2014 at 6:09

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