Oracle

Oracle.ManagedDataAccess.dllEven for 64-bit systems, register a 32-bit version.#if INTERACTIVE#[email protected] "C:\oracle\odp.net\managed\common\Oracle.ManagedDataAccess.dll"#endifOpen Oracle.ManagedDataAccess.ClientOpen

If Oracle is a later version of 11g, the default created instance uses the automatic Memory Management (AMM) feature, which is incompatible with hugepage.You need to disable AMM before you set up hugepage. Set the initialization parameters

This morning the user called to say that the system sort of problem, a closer look, the problem seems to be in ROWNUM this function.In Oracle the ROWNUM function is to assign the order of the query results in sequence, so a lot of people use this

Use of the Oracle 10g Wmsys.wm_concat Row-and-column conversion function:First let's take a look at this magical function wm_concat (column name), which separates the column values by the "," number, and displays them as a line, and then the example

Table information:1 SELECTTabcols.column_name as"Field",2Tabcols.data_type|| '(' ||Tabcols.data_length|| ')' as"Type",3Cons.constraint_type as"Key",4Tabcols.nullable as"Null",5Colcomments.comments as"Comment"6 fromUser_tab_cols Tabcols7 Inner

When doing the SQL tuning, sometimes need to add an index, test the performance improvement has no help group, if this table is very large, build index will be very troublesome, this scene virtual index will be the debut. Here's an experiment:Sql>

Here's a way to use the APPEND hint to make it possible to insert billions of data within 10 minutes.--Create tableCREATE TABLE Tmp_test_chas_lee(F01 VARCHAR2 (20),F02 Number (TEN) is not NULL,f03 VARCHAR2 (21),f04 VARCHAR2 (21),F05 number,F06

MySQL is different from Oracle, and in MySQL, there is noCREATE OR REPLACEIf you need this sentence, you can useDROP FUNCTION IF EXISTS ' GetUserName '; CREATE FUNCTION ' GetUserName ' (Nuserid INT) ...Replace.such as: (Error)CREATE OR REPLACE

Oracle 11g RAC CRS process restart times wrong1 The above error occurred while creating a RAC clusterDelete the/etc/oracle/scls_scr/rac1/oracle/cssfatal file on the Node1 machineRun/u01/app/grid/product/11.2.0/grid/root.sh2 The above error occurred

Simple Introduction to Oracle in RowNum and Row_number () use, example demo.Reference: http://www.cnblogs.com/zjrstar/archive/2006/08/31/491090.htmlLet's start by creating an example to illustrate, stealing a lazy, using the child's shoes

The SELECT statement in Oracle can implement a recursive query using the start With...connect by prior clause, which is used in structured queries.The basic syntax is:Select ... from where Start with Connect by ;: Filter condition for filtering all

There is a recent industry project that requires large data to be imported from files to Oracle. We use Oracle 's sqlldr to import data, which is too long to import when the amount of data is large: Importing a table of 8 Thousands records takes 2.5

ORA-07445 [mdagun_iter + 957] WhenUsingSDO_AGGR_UNION problem handling Problem description: ORA-07445: mdagun_iter () [Address not mapped to object] Oracle Database 10g Enterprise Edition Release 10.2.0.4.0-64bit ProductionWith the Partitioning,

Summary of Oracle Database Import and Export (same version) Today, I have nothing to worry about, so I started a database for fun. By the way, I will summarize it. 0. log on to the database as the cmd command Administrator Sqlplus/as sysdba 1. cmd

Complete installation of Oracle11g in Linux (X64) with basic operations, x64oracle11g 1. Modify core operating system parameters Perform the following steps under the Root user: 1) modify the user's SHELL restrictions and modify

Oracle11Gdirectpathread is very beautiful and hurtful.Direct path read In 11g, full table scan may use direct path read to bypass the buffer cache. Such full table scan is physical read. In 10 Gbit/s, it is read through gc buffer, so there is no

Oracle11g installation and basic usage-reprinted, oracle11g installation reprinted   The size of the captured image is different. You can check it later! Test whether the operating system and hardware environment are consistent. I use win2008

Reproduce the librarycachelock wait event at Oracle11g From the example below, we can see that re-Compilation of objects in the production database will lead to library cache lock, so we should try to avoid compiling objects during business peaks.

Proper Installation of oracle11gplsql in win7-64bit I have installed the Oracle 11g Database Service on my PC. I cannot connect to the database through PL/SQL because PLSQL does not have a 64-bit version, an error is reported when you connect to a 64

Handling of ORA1455 errors when exporting oracle11g data This exception may occur because the exported User table may have an empty data table. First: View: SQL> show parameter deferred_segment_creation; If this parameter is set to TRUE, set