oracle dba tables

Tags: style color data SP AMP c work AD managementORACLE DBA responsibility is basically equivalent to daily work.0. Database design1. Creation and management of schema Objects (table, index, etc.)2. Management of things, such as concurrency3. SQL Tuning4. User management, Rights Management5. Real-time operational monitoring (with Toad, Statspack), for SQL-related content, tuning------------------------------------------------------------------------

Tags: Oracle online convertBefore the Oracle12.2 version, if you want to convert a non-partitioned table to a partitioned table, there are several ways to do this: 1. Build the partition table and insert the data into the partition table with the INSERT into SELECT, 2, use the method of online redefinition (dbms_redefinition). Their currency is: the first method, if the table has frequent DML operations, especially the update operation, you need to st

link is not# Sqlnet.ora Network Configuration File:d:\app\user\product\11.2.0\dbhome_3\network\admin\sqlnet.ora# Generated by Oracle configuration tools.# This file was actually generated by NETCA. But if customers choose to# install ' Software only ', this file wont exist and without the native# Authentication, they'll is not being able to connect to the database on NT.Sqlnet. Authentication_services= (NTS)NAMES. Directory_path= (TNSNames, Ezconnect

Some people on the Internet have provided the best optimization ideas for the application of temporary tables in Oracle temporary tables: 1. first, extract the records that meet the conditions in the large table to generate a temporary table. 2. then, associate the small temporary table with another small table. regardless of whether the thinking is debatable or

. If you create a global temporary table named # employeesAny user in the data table can perform operations on the table. If the table is not used by other users after you create it, delete it when you disconnect it. If the table is createdOtherwise, SQL Server deletes the table after all users are disconnected.Different:1. the SQL Server temporary table is a "memory table", which is stored in the memory. The Oracle temporary table is stored in the da

Temporary tablesIn Oracle, a temporary table is "static," which, like a regular datasheet, needs to be created only once, and its structure is valid for the entire period from creation to deletion. In contrast to other types of tables, a temporary table allocates space for the user when the data is actually added to the table, and the allocated space is from the temporary table space. This avoids data conte

Introduction to the use of dual tables in Oracle and the use of oracledual tables Dual is a virtual table used to form the select syntax rule. oracle ensures that there will always be only one record in dual. We can use it to do a lot of things, as shown below: 1. view the current user. You can execute the following st

Some people on the Internet have provided the best optimization ideas: 1. first, extract the records that meet the conditions in the large table to generate a temporary table. 2. then, compare the small temporary table with another small table. Some people on the Internet have provided the best optimization ideas: 1. first, extract the records that meet the conditions in the large table to generate a temporary table. 2. then, compare the small temporary table with another small table. Some

Some people on the Internet have provided the best optimization ideas: 1. Extract the records that meet the conditions in the large table to generate a temporary table. 2. Associate the small temporary table with another small table. No matter whether the thinking is worth discussing, it is very worthy of recognition to regard the temporary table as a transfer station. Temporary tables are essentially cache representations. Temporary

Oracle used a temporary table to return data tables and found many articles about the returned data tables in the stored procedure. We found that there is a big difference between oracle and SQL server. SQL server can directly return data tables in the stored procedure,

enter to start data import. Quickly clear the table content: truncate table xxxx/truncate table user. xxxx note: the user is the database user, which is to clear the user's XXXX table content. Copy data from a table to another table: Create Table YYY as select * From uuu. Copy the data in the uuu table to yyy. It can also be copied to other users in Oracle on the same server (using user as an example): Create Table user. YYY as select * From uuu Crea

Search Oracle-locked tables and unlock SQL code: selectobject_name, machine, s. sid, s. serial # fromv $ locked_objectl, dba_objectso, v $ sessi Search Oracle-locked tables and unlock SQL code: select object_name, machine, s. sid, s. serial # from v $ locked_object l, dba_objects o, v $ sessi Search