zt_data block数据块之物理结构初识
http://www.itpub.net/thread-1587833-1-2.html
zt_11g新特性 ——更加灵活的分区策略partition
http://www.hellodba.com/reader.php?ID=58&lang=CN
zt_eygle_Oracle中 HWM与数据库性能的探讨
http://www.eygle.com/archives/2011/11/oracle_hwm_tuning.html
oracle分区及分区索引partition_partition index_维护(四)
前几篇主要测试了范围分区的创建及维护,侧重语法方面; 参见:http://space.itpub.net/9240380/viewspace-751843如:创建分区表,添加分区表,删除分区,修改分区属性,合并分区,拆分分区,交换分区等如...
oracle分区及分区索引partition_partition index_维护(三)
http://space.itpub.net/?uid-9240380-action-viewspace-itemid-751842 ------------交换分区,用普通表和分区表某个分区交换,即把普通表的数据可以转化到分区表中---如下说明要进行交换分区,普通表要与...
oracle分区及分区索引partition_partition index_维护(二)
http://space.itpub.net/9240380/viewspace-751835 续上继续测试: ----------------------------truncate分区SQL> select table_name,composite,partition_name from user_tab_partitions w...
oracle分区及分区索引partition_partition index_维护(一)
-- Create tablecreate table PORTAL_REQUESTWS_HISTORY_01( id VARCHAR2(32) not null, c...
如何处理业务系统中并发比较高的表数据清理工作
1,SQL> set sqlprompt session_130>session_130>insert into t_free select * from t_free;2,session_8>truncate table t_free;truncate table t_free &nbs...
zt_Oracle enq: TX contention 和 enq: TM contention 等待事件
http://blog.csdn.net/tianlesoftware/article/details/6526238
zt_日志文件相关等待_log file wait
http://www.dbtan.com/2010/05/event-about-log.html
oracle funcdtion_bitand
bitand bitand 返回两个数值型数值在按位进行 AND 运算后的结果。 语法 BITAND(nExpression1, nExpression2) 参数 nExpression1, nExpression2 指定按位进行 AND ...
zt_enqueue:HW问题分析与解决
http://blog.csdn.net/hijk139/article/details/7411106 小结:经加大alter table x allocate(extent 1000m);通过监控select * from v$session_wait;--仍会产生hw contention 明天继续分析! ...
ORA-25150: 不允许对区参数执行 ALTERING
SQL> alter table t_free storage (maxextents 120);alter table t_free storage (maxextents 120)*第 1 行出现错误:ORA-25150: 不允许对区参数执行 ALTERING SQL> select tablespace_name,extent_mana...
zt_Segment Advisor监控对象的碎片程度并回收
http://blog.csdn.net/gguxxing008/article/details/6858579
oracle11g_Descriptions of Wait Events_等待事件全列表
http://docs.oracle.com/cd/E11882_01/server.112/e25513/waitevents003.htm#sthref3925
oracle11g_wait event等待事件及潜在原因列表
Table 10-1 Wait Events and Potential CausesWait EventGeneral AreaPossible CausesLook for / Examinebuffer busy waitsBuffer cache, DBWRDepends on buffer type. For example, waits for an index blo...
zt_关于wait events asynch descriptor resize_wait event
http://www.itpub.net/thread-1362104-1-1.html
zt_direct path read temp等待如何解决_wait event
http://www.itpub.net/thread-1088598-1-1.html
zt_orafaq_delete与truncate的区别
Diff B/W Truncate & DeleteSubmitted by arunbharat2001 on Sat, 2012-10-20 11:03SQL & PL/SQLDelete 1.DML data can be recovered by rollback before commit2.Remove any subset of data3.Delete is slo...
Oracle bootstrap$ 详解
http://qjoycn.iteye.com/blog/1279731