Oracle

Connected to Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 Connected as scott SQL code SQL> select * from dept; deptno dname loc ------ ------------ ------------- 10 accounting new york 20 research dallas 30 sales chicago 40 operations

Problem description: Some time ago, when the project was deployed on the server of the customer's data center, we found that the tables of our test database were all placed under the system or users tablespace. The corresponding table is not placed

PGA is the dedicated memory of a process and never allows access by other processes. You can use the C language to call malloc () allocation during runtime to dynamically scale up or down. Furthermore, PGA will never be allocated in the SGA of

Oracle instant client is installed in Linux on the PL/SQL Dev Virtual Machine and Oracle is installed. Since PL/SQL Developer is used in Windows physical machines to connect to Oracle on the virtual machine, but I don't want to reinstall Oracle on

Oracle DBA Study Notes-STARTUP detailed description: Refer to database version: 10.0.2 I. Command Parsing STARTUP options | upgrade_options options is: [FORCE] [RESTRICT] [PFILE = filename] [QUIET] [MOUNT [dbname] | [OPEN [open_options] [dbname] |

Oracle note (4) Structured Query Language (Structured Query Language): simple Query, limited Query, and data sorting 1. It is a database Query and programming Language, it is used to access data and query, update, and manage relational database

Oracle note (13) view, synonym, and index links: Oracle note (1) Oracle introduction and Installation http://www.bkjia.com/database/201209/154049.html ; Oracle notes (2) SQLPlus command http://www.bkjia.com/database/201209/154051.html Oracle note (3)

ORA-00904: "OTHER_TAG": Invalid identifier problem SQL> set autotrace on SQL> SELECT SYSDATE FROM DUAL; www.2cto.com SYSDATE -------------- 26-9 month-12 execution plan failed ERROR: an uncaught error in function display has happened; please contact

Some similarities and differences between oracle and db2 1. Differences between Table space for indexes Oralce: Create TABLE T1 ............. IN DATA_TACreate Index ........ ON T1 ...... IN INDX_TS DB2: Create TABLE T1 ........ IN DATA_TS index in

An empty table cannot be exported using exp. solution/the earliest reason for table loss when using exp to export data using oracle 11g is that some tables are lost, which is inexplicable, then I finally found the cause. Find the problem and check

Oracle Database PL/SQL trigger 7) trigger www.2cto.com 1. two basic concepts: complete the constraints of complex business rules that are difficult to complete due to the integrity constraints of the database; monitor various operations of the

An understanding of null usage in oracle SQL statements recently found some problems with null usage when writing pl/SQL package. The following is my understanding and may be incorrect.You are welcome to correct. Www.2cto.com SQL> set serveroutput

Create oracle tablespace and user permission query create user and tablespace in linux: www.2cto.com 1. log on to linux and Log On As an oracle user (if it is logged on as a root user, after logon, use the su-oracle command to switch to an oracle

When the plsql tool executes update submission, there is no prompt box Indicating "Submit current transaction". Because PLSQL can check "no longer display this information" under the prompt "Submit current transaction ", once this option is selected,

Insert the query results of one table in Oracle to table 1 and Oracle database. Generate and import the query results of one table to a new table. Www.2cto.com. For example, if only table A is available, query table A and import the result to table

Tnsnames used to connect PLSQL to Oracle. ora file # TNSNAMES. ORA Network Configuration File: D: \ oracle \ ora92 \ network \ admin \ tnsnames. ora # Generated by Oracle configuration tools. www.2cto.com orcl = (DESCRIPTION = (ADDRESS_LIST =

Windows oracle automatic backup script, automatically retain 7 days Bat code www.2cto.com @ echo off set backhome = backup set year = % date :~ 0, 4% set month = % date :~ 5, 2% set day = % date :~ 8, 2% set mydate = % year % month % day % set

Oracle Stored procedure Loop insert a table to another table 1. create a Stored procedure SQL code create or replace procedure inserttest as cursor cs is SELECT sales_id FROM t02salesinfo_backup; sales_id varchar (128 ); begin for c in cs loop BEGIN

Image Copy Incremental Updates (ICIU): concepts (I) limits the use of Redo to reduce the recovery time (ii) Principles of creating an Image Copy of a data file, and then using an Incremental backup set to update the Image Copy: merge a level 1

Transaction and database recovery principles the logical unit of data storage is data blocks, and the logical unit of data operations is transactions. A transaction is a user-defined sequence of operations. It consists of one or more SQL statements