mysql錯誤處理彙總
mysql無法啟動
mysql啟動時提示timeout error occurred trying to start mysql daemon
解決辦法:執行/usr/bin/mysql_install_db,修復下就ok了.
mysql資料表無法使用
啟動後發現所有的資料表都無法使用,檢視mysql異常日誌,發現如下log
[root@ay1212190315567971802 sliuhuamysql]# tail /var/log/mysqld.log
innodb: a big enough maximum process size.
innodb: note that in most 32-bit computers the process
innodb: memory space is limited to 2 gb or 4 gb.
innodb: we keep retrying the allocation for 60 seconds...
130109 12:32:19innodb: fatal error: cannot allocate the memory for the buffer pool
130109 12:32:19 [error] plugin 'innodb' init function returned error.
130109 12:32:19 [error] plugin 'innodb' registration as a storage engine failed.
130109 12:32:19 [note] event scheduler: loaded 0 events
130109 12:32:19 [note] /usr/libexec/mysqld: ready for connections.
version: '5.1.58' socket: '/var/lib/mysql/mysql.sock' port: 3306 mysql community server (gpl) by utter ramblings
[root@ay1212190315567971802 sliuhuamysql]# tail -n 20 /var/log/mysqld.log
130109 12:31:17 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended
130109 12:31:18 mysqld_safe starting mysqld daemon with databases from /var/lib/mysql
130109 12:31:19 innodb: initializing buffer pool, size = 256.0m
130109 12:31:19 innodb: error: cannot allocate 268451840 bytes of
innodb: memory with malloc! total allocated memory
innodb: by innodb 7994352 bytes. operating system errno: 12
innodb: check if you should increase the swap file or
innodb: ulimits of your operating system.
原因:這個報錯的大意是,記憶體基本耗盡,沒有再可以分配的記憶體.
解決辦法:檢視/etc/my.cnf,找innodb_buffer_pool_size,發現設值已經超過了系統總記憶體,然後重新設定為系統記憶體1半,即innodb_buffer_pool_size = 6144m 重啟mysql就ok了.
支付寶 賞一聽可樂吧~
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