Upgrade Magento from 1.7 to 1.9

Upgrading magento involves upgrading codebase, data migration, extensions & themes migration and your custom code. You can follow these steps to upgrade your magento installation from 1.7.x to 1.9.x.

For this we have an approach to change directory names at last step to avoid any conflicts and make rollback strategy simple and quick.

Assumptions

Directory name for current 1.7 store used in this tutorial is store17, replace all occurrences of it with correct directory name.

Steps to Upgrade

First we need to disable compilation and cache for our current store:

Disable Magento Compilation from System > Tools > Compilation > Disable


Disable Magento Cache from System > Cache Management > Select All > Action: Disable > Submit


Turn on Maintenance mode for live store, take database backup and Extract 1.9 files for installation


Install 1.9

Install 1.9 in separate directory but keep the database configuration same. It means that when it is asked to input database information while installation, you should provide the information of same database as of live 1.7 store.

We assume the directory name is 'magento19' for 1.9 installation.

Copy folders and files

We need to copy few folders and files from our 1.7 store to this new installation, execute following commands:

Update Base URL & Paths and clear Cache


Rollback

If you want to rollback to 1.7, follow below steps

Conclusion

This looks a happy flow for upgrading magento, we will further discuss how to find and add extensions to the upgraded version.

Feel free to comment for any suggestions and addition to these steps.

Sources:

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