Title: Memory Limit Problem During Upgrade – Solution
Last modified: August 18, 2016

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# Memory Limit Problem During Upgrade – Solution

 *  [portent](https://wordpress.org/support/users/portent/)
 * (@portent)
 * [18 years, 8 months ago](https://wordpress.org/support/topic/memory-limit-problem-during-upgrade-solution/)
 * I use Keith Dsouza’s excellent upgrade plugin for doing upgrades and had a nasty
   this morning while upgrading to 2.3
 * My blog has over 1,000 posts and an 8MB PHP limit on the server. I’d already 
   hit this before with the Google Sitemap generator and got the “Fatal error: Allowed
   memory size of 80000000 bytes exhausted (tried to allocate 253742 bytes)” error.
 * The answer was to add (in my case)
    ini_set(“memory_limit”,”16M”); to various
   scripts.
 * This memory limit also hit during the 2.3 upgrade and reported fatal errors when
   reactivating most of my plugins. The problem was wp-includes\cache.php which 
   now needs ini_set.. added at the start as well. The tricky bit is you have to
   wait until the new php scripts have been copied in during the upgrade, patch 
   it then continue so it has to be done manually not automatically.

Viewing 5 replies - 1 through 5 (of 5 total)

 *  Thread Starter [portent](https://wordpress.org/support/users/portent/)
 * (@portent)
 * [18 years, 8 months ago](https://wordpress.org/support/topic/memory-limit-problem-during-upgrade-solution/#post-625980)
 * PS. I’m not sure of my php to say whether this is possible, but could this be
   considered as some kind of system wide option for a future version?
 *  [Lester Chan](https://wordpress.org/support/users/gamerz/)
 * (@gamerz)
 * [18 years, 8 months ago](https://wordpress.org/support/topic/memory-limit-problem-during-upgrade-solution/#post-625986)
 * it is dependent from host to host actually
 *  [Jeremy Clark](https://wordpress.org/support/users/jeremyclark13/)
 * (@jeremyclark13)
 * [18 years, 8 months ago](https://wordpress.org/support/topic/memory-limit-problem-during-upgrade-solution/#post-625998)
 * If your host is a linux host then try setting the php memory limit in a .htacess
   file in the root of your blog. You can set it by adding this.
 * `php_value memory_limit 16M`
 * Just change the 16M to whatever you like.
 *  [GVS](https://wordpress.org/support/users/gvs/)
 * (@gvs)
 * [18 years, 8 months ago](https://wordpress.org/support/topic/memory-limit-problem-during-upgrade-solution/#post-626014)
 * I have the same problems on my home server, it gives me fatal errors when I am
   installing other scripts and forums too. help me to repair it plz
 *  [greftek](https://wordpress.org/support/users/greftek/)
 * (@greftek)
 * [18 years, 7 months ago](https://wordpress.org/support/topic/memory-limit-problem-during-upgrade-solution/#post-626209)
 * From a system administrator point of view just upping the memory limit from 8
   to 16M in PHP is potentially hazardous thing to do.
 * You have to realize that this is 8M per child extra, almost doubling the memory
   usage. Those figures stack up fast if you realize that a semi-productive server
   easilly can have about 80 childs running. Do the math. 😉
 * Unfortunately this IS the only answer for the end-user. I am sure the WordPress
   team can consider reviewing the code to reduce the memory burden it places on
   PHP installations.

Viewing 5 replies - 1 through 5 (of 5 total)

The topic ‘Memory Limit Problem During Upgrade – Solution’ is closed to new replies.

## Tags

 * [php](https://wordpress.org/support/topic-tag/php/)
 * [upgrade](https://wordpress.org/support/topic-tag/upgrade/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 5 replies
 * 5 participants
 * Last reply from: [greftek](https://wordpress.org/support/users/greftek/)
 * Last activity: [18 years, 7 months ago](https://wordpress.org/support/topic/memory-limit-problem-during-upgrade-solution/#post-626209)
 * Status: not resolved

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