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invoke-rc.d: initscript mysql, action "start" failed.
ʹÓÃÃüÁsudo aptitude purge mysql-server mysql-server-5.0
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apt-get install mysql-server-5.0
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2009-10-24 00:23
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ps -ef | awk '{print $1}' | grep "mysql" | grep -v "grep" | wc-1
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# uptime
[root@ ~]# uptime
13:05:52 up 53 days, 52 min, 1 user, l ......
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MySQL »á×Ô¶¯¶Ï¿ª IDLE ʱ¼ä³¬¹ý 8 СʱµÄÊý¾Ý¿âÁ¬½Ó£¬´Ó¶øµ¼ÖÂһЩ»ùÓÚÊý¾Ý¿âÁ¬½ÓµÄÓ¦ÓóÌÐò£¬ÌرðÊÇ WEB Ó¦ÓóÌÐò³ö´í¡£
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µÚÒ»¸ö°ì·¨ÊÇÐÞ¸Ä MySQL µÄÅäÖòÎÊý¡£Õâ¸ö²ÎÊýµÄÃû³ÆÊÇ wait_timeout
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user±í:
id | name
———
1 | libk
2 | zyfon
3 | daodao
user_action±í:
user_id | action
—————
1 | jump
1 | kick
1 | jump
2 | run
4 | swim
sql:
select id, name, action from user as u
left join user_action a on u.id = a.user_id
result:
id | ......
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org.hibernate.exception.JDBCConnectionException: could not execute query ......