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2013年3月19日

Script:To Report Information on Indexes

摘要: Reports index fragmentation statistics:==========Script #1:==========SET ECHO offREM NAME: TFSIFRAG.SQLREM USAGE:"@path/tfsifrag schema_name index_name"REM ------------------------------------------... 阅读全文

posted @ 2013-03-19 00:32 Oracle和MySQL 阅读(189) 评论(0) 推荐(0)

Know more about Buffer Cache and Latch

摘要: We can examine X$BH table to obtain buffer header information,The BH stands for buffer header.Structures that maintain a list of data buffer headers are called:Hash buckets.Hash buckets are grouped by... 阅读全文

posted @ 2013-03-19 00:32 Oracle和MySQL 阅读(124) 评论(0) 推荐(0)

EVENT:10052 "Stop SMON from cleaning up obj$"

摘要: Text: Stop SMON from cleaning up obj$-------------------------------------------------------------------------------NOTE:Events should NEVER be set by customers unless advised to do so byOracle Supp... 阅读全文

posted @ 2013-03-19 00:32 Oracle和MySQL 阅读(155) 评论(0) 推荐(0)

EVENT 10235:"check memory manager internal structures"

摘要: Event:10235 ~~~~~~~~~~~ Version/Use: 7.0 - 10.1.X Check memory manager internal structures. 7.0 - 10.1.X "Check memory manager internal structures" ~~~~~~~~~~~~~~~~~~~~~~~~~~... 阅读全文

posted @ 2013-03-19 00:32 Oracle和MySQL 阅读(117) 评论(0) 推荐(0)

EVENT 10051:"trace OPI calls"

摘要: Error: ORA 10051Text: trace OPI calls-------------------------------------------------------------------------------Explanation:This is NOT an error but is a special EVENT code.It should *NOT* be u... 阅读全文

posted @ 2013-03-19 00:32 Oracle和MySQL 阅读(131) 评论(0) 推荐(0)

VIEW:X$KCCRS-Controlfile Record Section directory (8.0 - 8.1)

摘要: View: X$KCCRS [K]ernel [C]ache [C]ontrolfile management controlfile [R]ecord [S]ection directory Column Type Description -------- ---- ----------- ... 阅读全文

posted @ 2013-03-19 00:32 Oracle和MySQL 阅读(165) 评论(0) 推荐(0)

Fixed X$ Tables in ASM

摘要: From Vinod Haval's These Views helps in understanding the following metrics Physical Mapping Provides Undocumented Information 18 X$ Tables (May be more) TABLE NAMEDESCRIPTIONX$KFALSThis table gi... 阅读全文

posted @ 2013-03-19 00:32 Oracle和MySQL 阅读(188) 评论(0) 推荐(0)

Skip Scanning of Indexes Advantages

摘要: What is skip scanning? In prior releases, a composite index would be used to retrieve the records, if the index prefix (leading) column was included in the predicate of the statement. With Oracle9i, t... 阅读全文

posted @ 2013-03-19 00:32 Oracle和MySQL 阅读(176) 评论(0) 推荐(0)

Script to Detect Tablespace Fragmentation

摘要: create table SPACE_TEMP ( TABLESPACE_NAME CHAR(30), CONTIGUOUS_BYTES NUMBER)/declare cursor query is select * from dba_free_space order by tablespace_name, bloc... 阅读全文

posted @ 2013-03-19 00:32 Oracle和MySQL 阅读(228) 评论(0) 推荐(0)

Network Interface No Longer Operational?

摘要: Solaris平台上的Oracle数据库,Alert日志偶尔会出现"Network Interface No Longer Operational"的相关记录:ospid 11223: network interface with IP address 192.4.1.22 no longer operationalrequested interface 192.4.1.22 ioctl get ... 阅读全文

posted @ 2013-03-19 00:32 Oracle和MySQL 阅读(107) 评论(0) 推荐(0)

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