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windows下集成方法 1、下载tcnative-1.dll 2、把tcnative-1.dll copy到tomcat/bin目录下即可linux下集成方法解压tomcat/bin目录下的 tomcat-native 进入到 /usr/local/tomcat-5.5.23/bin/tomcat-native-1.1.6-src/jni/native ./configure --with-apr=/usr/local/apr --with-java-home=/usr/local/jdk1.5.0_12 make make install 安装到/usr/lib/a ...

2009-08-20 10:06
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查找没有索引的外键

博客分类：

DataBase

Oracle SQL

http://asktom.oracle.com/tkyte/unindex/unindex.sql column columns format a20 word_wrapped column table_name format a30 word_wrapped select decode( b.table_name, NULL, '****', 'ok' ) Status, a.table_name, a.columns, b.columns from ( select substr(a.table_name,1,30) table_name, ...

2009-06-26 03:17
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转载：enqueue deadlocks，library cache deadlocks.

博客分类：

DataBase

Cache Oracle SQL SQL Server Linux

http://yong321.freeshell.org/computer/deadlocks.txt There're two common deadlocks. ORA-60, enqueue deadlocks; ORA-4020, library cache deadlocks. ********** ORA-60 ********** Reproduction: This is very easy to reproduce. Just follow this procedure: In sessionA, update tb set col = 'x' where pk ...

2009-06-26 03:14
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Deadlocks

博客分类：

DataBase

Oracle SQL performance Access UP

http://www.oratechinfo.co.uk/deadlocks.html Deadlocks What are deadlocks? The "classic" deadlock What happens to both sessions? So, what's the fix? Deadlocks with Autonomous Transactions Deadlocks with Bitmap Indexes Deadlocks with unindexed foreign keys Detecting ...

2009-06-26 02:29
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转：Java RMI 服务器框架

博客分类：

JAVA_EE

Java 框架 IBM J#

http://www.ibm.com/developerworks/cn/java/j-rmiframe/

2009-06-22 07:27
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转：Java 理论与实践: 正确使用 Volatile 变量

博客分类：

JAVA_SE

Java IBM J#HTML

http://www.ibm.com/developerworks/cn/java/j-jtp06197.html

2009-06-22 01:29
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HotSpot Server VM warning: bailing out to foregrou

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SUN thread

参考资料： http://blogs.sun.com/jonthecollector/entry/size_matters http://blogs.sun.com/jonthecollector/entry/what_the_heck_s_a http://blogs.sun.com/jonthecollector/entry/why_now http://forums.sun.com/thread.jspa?threadID=5351909 http://forums.sun.com/thread.jspa?threadID=752626 http://forums.sun.co ...