持続的掄続

æŒç¶šçš„æŽ„ç¶šăźäœżç”š

mysqli ず mysqlnd ăźç”„ăżćˆă‚ă›ă§äœżăŁăŠă„ă‚‹ć ŽćˆăŻă€ æŒç¶šçš„æŽ„ç¶šă‚’äœœă‚‹ăšăă«ă‚”ăƒŒăƒăƒŒäžŠă§ COM_CHANGE_USER (mysql_change_user()) ă‚’ć‘Œăłć‡șă—ăŸă™ă€‚ă“ă‚Œă§ă€æŽ„ç¶šăźèȘèšŒăŒć†ăłèĄŒă‚ă‚Œă‚‹ă“ずにăȘă‚ŠăŸă™ă€‚

COM_CHANGE_USER ăźć‘Œăłć‡șしべ閱連するă‚ȘăƒŒăƒăƒŒăƒ˜ăƒƒăƒ‰ăŒè‹„ćčČあるぼで、 ă‚łăƒłăƒ‘ă‚€ăƒ«æ™‚ă«ă“ă‚Œă‚’ă‚Șăƒ•ă«ă™ă‚‹ă“ăšăŒă§ăăŸă™ă€‚ æŒç¶šçš„æŽ„ç¶šă‚’ć†ćˆ©ç”šă™ă‚‹ăšă€æŽ„ç¶šăŒć†ćˆ©ç”šă§ăă‚‹ă‹ă©ă†ă‹ç°Ąć˜ă«ăƒ†ă‚čăƒˆă™ă‚‹ăŸă‚ă«ă€ COM_PING (mysql_ping) ăźć‘Œăłć‡șă—ăŒç”Ÿæˆă•ă‚ŒăŸă™ă€‚

COM_CHANGE_USER ă‚’ć‘Œăłć‡șさăȘă„ă‚ˆă†ă«ă™ă‚‹ă«ăŻă€ă‚łăƒłăƒ‘ă‚€ăƒ«ăźăšăă« MYSQLI_NO_CHANGE_USER_ON_PCONNECT ăƒ•ăƒ©ă‚°ă‚’äœżă„ăŸă™ă€‚ăŸăšăˆă°æŹĄăźă‚ˆă†ă«ăȘă‚ŠăŸă™ă€‚ äŸ‹ăˆă°ă€

shell# CFLAGS="-DMYSQLI_NO_CHANGE_USER_ON_PCONNECT" ./configure --with-mysql=/usr/local/mysql/ --with-mysqli=/usr/local/mysql/bin/mysql_config --with-pdo-mysql=/usr/local/mysql/bin/mysql_config --enable-debug && make clean && make -j6

ăŸăŸăŻăăźä»Łă‚ă‚Šă«ă€ä»„äž‹ăźă‚ˆă†ă«ă—ăŸă™ă€‚

shell# export CFLAGS="-DMYSQLI_NO_CHANGE_USER_ON_PCONNECT"
shell# configure --whatever-option
shell# make clean
shell# make

mysqlnd 侊ぼ mysqli だけが COM_CHANGE_USER ă‚’äœżç”šă™ă‚‹ă“ăšă«æłšæ„ă—ăŠăă ă•ă„ă€‚ ä»–ăźæ‹ĄćŒ”ăƒąă‚žăƒ„ăƒŒăƒ«ăšăƒ‰ăƒ©ă‚€ăƒăƒŒăźç”„ăżćˆă‚ă›ă§ăŻă€æŒç¶šçš„ăȘæŽ„ç¶šă‚’æœ€ćˆă«äœżç”šă™ă‚‹éš›ă«ă€ COM_PING ă‚’äœżç”šă—ăŸă™ă€‚

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