这是操作系统，我想在这个操作系统下安装oracle 10G数据库。下载了：102010_win64_x64_database 安装时，系统提示： 可是我找不到对应的oracle 10G的版本。请问，这个要安装什么版本的数据库？ 我之前安装9I ...

大家可以在测试库进行测试，然后决定是否使用。 set pages 100 set head on set lines 300 set trims on col file_name format a45 select tablespace_name, file_name, bytes/1024 Kbytes from dba_temp_files; ...

表空间碎片处理问题 表空间碎片问题有点困惑，请各位给我解惑一下！ 例如: TABLESPACE_NAME FSFI TEST 100 TEST01 30 TEST0 ...

1.truncate和delete删除表中的数据；drop是将表从数据字典中删除，并清空表中的数据。 2.truncate和drop 为DDL语句，不会产生重做日志；delete为DML语句，会产生重做日志。 3.truncate之后会降低高水位线，而delete ...

Reference NotesThe formula for the cost (using the CPU Costing Model) of a query is: Cost = ( #SRds * sreadtime + #MRds * mreadtime + #CPUCycles / cpuspeed ) / sreadtime where: #SRds = number of sin ...

Goal To trace the CBO working out the execution path (event 10053) Facts Solution To start the CBO trace enter the following command: ALTER SESSION SET EVENTS='10053 trace name context forever, le ...

Solution The following script will find SQL with many disk reads: -- ------------------------ -- Find SQL Statements that -- require a lot of disk -- reads. -- ------------------------ SELECT * FROM ...

Use these statements to determine the physical Disk I/O performed on Tablespaces or Data Files. Tablespace Files Physical Reads and Writes set pages 500 lines 110 clear col bre buffer col tablespac ...