Oracle

The previous section describes the reasons for rebuilding the index and how to rebuild it, and this section continues with several common SQL statements and stored procedures.Querying for all defunct global indexesSelect Index_name, status from

Original address:http://blog.csdn.net/lne818/article/details/3042250 PL/SQL Table---table () function usage/*PL/SQL Table---table () function usage:Using the table () function, we can replace the result set returned by PL/SQL with the table.The

EnvironmentHost Linux [[Email protected]_1 ~]$ lsb_release-alsb Version:: Base-4.0-amd64:base-4.0-noarch:core-4.0-amd64:core-4.0-noarch: Graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarchdistributor

Organize from Network + experimental character set the most important parameter that affects the Oracle database character set is the Nls_lang parameter.Its format is as follows: Nls_lang = Language_territory.charsetThe Nls_lang parameter consists

[Email protected] ~]#/u01/app/orainventory/orainstroot. SH /u01/app/orainventory.adding Read,write for group. Removing read,writefor/u01/app/orainventory to Oinstall. The execution of the script is complete.[Email protected] ~]#/u01/app/11.2.0/grid/

MySQL date and Character conversion method Date_format (date, '%y-%m-%d ')--------------To_char () in >oracle; Str_to_date (date, '%y-%m-%d ')--------------to_date () in >oracle;%Y: Represents a 4-digit year%Y: Represents the year of 2 for%m:

 The cause of the problem is mainly the following two points:1. There is a large transaction volume that allows Oracle undo to scale automatically, resulting in excessive disk space usage;2. There are larger transactions that do not shrink or do

SELECT * FROM (select T2.cadastralno parcelid,t1.pkid taxpayerid,t2.taxtype taxtype,t1.booktype Taxpayertype,T2.cadastralno Parcelcadastralno,t2.landuser Parcellanduser,t1.payername TaxpayerpayernameFrom Grid_sysdb.bss_taxpayers

To_date format (in time: 2007-11-02 13:45:25 for example) year:yy two digits two-bit year display value: 07yyy three digits three-bit year Display value: 007yyyy four digits four-digit year display value: 2007month:mm number two-bit month display

the background of the story is this: a project about 4 projects at the same time development, in my own project need to make a report, but to access another project connected to the DB, of course, the two projects of the DB server is on the same IP,

Linux kernel parameters and Oracle related parameter adjustment categories: Oracle Basic knowledge2009-10-14 12:23 9648 people Read reviews (0) Favorites Report Oraclelinuxsemaphorearraysdatabase oracle10gThe size of the Linux kernel parameters and

Environment: oracle:10gJDBC Driver: Copy the Oracle installation directory (Oracle\product\10.2.0\db_1\jdbc\lib\ojdbc14.jar) file to the Jmeter/lib directoryjmeter:jmeter-2.111. Open JMeter, click Test PlanClick on the "Browse ..." button to add

the principle of Buffer cacheOne1) When a server process needs to read the data into the buffer cache, it must first determine whether the data exists in buffer , if it exists and is available, to get the data, and to move it on the LRU list based

In an Oracle database, you can use the Wm_concat (column) function for field merging, but this method is not recommended by Oracle because the Wmsys user is used by the workspace Manager, whose function objects may differ from version to exception.

This article will demonstrate the verification process of the Oracle character set "Transcoding" through experiments.1.Lab Environment DescriptionThe client is the Sql*plus program for the Windows XP operating system, and the client character set is

Oracle how to ensure the ACID principle of transactions -- oracle Core Technology Study Note 2 There are four general principles in the transaction that all databases must comply with, referred to as the ACID principle. The following briefly

Common Methods for viewing Oracle execution plans-Series 2 Continued article: http://blog.csdn.net/bisal/article/details/38919181 3. AUTOTRACE Switch Turn on AUTOTRACE in SQLPLUS to get the SQL Execution Plan. The prompt shows that AUTOTRACE has

The restoration tablespace UNDO of oracle is full of disk space. Specific steps to solve this problemZookeeper causes the following problems:1. There is a large volume of transactions that allow Oracle Undo to automatically expand, resulting in

Oracle client download Oracle refers to a user with a level of capacity. The following describes how to install and assemble a column (using instantclient-win32-10.2.0.3-.zip ).Oracle provides six compressed packages to be downloaded from the Oracle

Oracle: view the table space where the user is located; oracle: view the user's location  View the tablespace of the current user [SQL]View plaincopy Select username, default_tablespace from user_users; Modify the user's default