Oracle

Problem:"Ora-01045: user system lacks create session privilege; logon denied" appears when you log on with PL/SQL ". Cause: no permissionIn Google, find the following description:What does "ORA-01045: User Username lacks create session

Physical storage structure of Oracle Database Structure 1 , Physical storage structure 1.1 Data Files Data files are used to store all database data. Storing data in multiple data files and storing data files in Different Hard disks can

The simplest scheduled Oracle task 1. Create a table in PLSQL: Create Table hwqy. Test ( Carno varchar2 (30 ), Carinfoid number ) 2. Create a stored procedure in PLSQL:Create or replace procedure pro_testAsCarinfo_id number;BeginSelect

The table below shows the ADO data type mapping between access, SQL Server, and Oracle: Datatype Enum Value Access Sqlserver Oracle Adbigint 20   Bigint (SQL Server 2000 +)  

When a user process connects to the database and creates a corresponding session, the Oracle service process sets a PGA zone for the user to store the relevant content of the user session. When the user session ends, the Database System

Zhuan: http://www.itpub.net/thread-1166708-1-1.htmlWhat should I know first as an Oracle DBA in a completely new environment?   Here, we will not talk about those major aspects, such as understanding the overall situation of the entire IT

1. Table: Table1 (FID, fclass, FSCORE). The most efficient and simple SQL statement is used to list the highest scores of each class. Two fields are displayed: class and score. Select fclass, max (FSCORE) from Table1 group by fclass, FID 2.

Oracle Study Notes --- (4) Thu Create a user and authorize the user in the System user:Create user usera identifiedBy usera defalut tablespace test;Grant connect, resourceUsera; 1. Synonyms Private and public PRIVATE: created

Oracle service in Windows : Sid-Database IDHome_name-Oracle Home Name, such as orahome92 and orahome81(1) oracleservicesidDatabase Service, which automatically starts and stops the database. If a database is installed, its default start type is

1. Explain the differences between cold backup and hot backup and their respective advantagesAnswer: Hot Backup is applicable to databases in the archive mode. When the database is still in the working state, it is backed up. Cold backup refers to

  The name of the table generated by powerdesigner is enclosed in quotation marks as follows: /* ===================================================== ======================================= *//* Table: "eppd_ B _bill_intercalate "*//* ============

Open the Oracle service port on the firewall To enable the Oracle client to connect to an Oracle server installed on windows with a firewall, it is not enough to open a 1521 or custom listening port. Sometimes we need to map the port to remotely

  1. Convert rows into columnsDrop table t_change_lc;Create Table t_change_lc (card_code varchar2 (3), Q number, Bal number ); Insert into t_change_lcSelect '001' card_code, rownum Q, trunc (dbms_random.value * 100) BAL from dual connect by

I have never understood the actual meaning of Schema. Today I see an article on the Internet.ArticleIt is good to say that it is specially saved, although it is about SQL Server 2005. From: http://oracle.banma.com/news/20080703/12566.shtml    If

Core tips: PLSQL and Oracle are both green versions, which are ready for decompression and pass the win7 64-bit test.Plsql9 Chinese Green Edition:Http://ishare.iask.sina.com.cn/f/23000969.htmlOracle11g client Green Edition   PLSQL and Oracle are

For Windows 64-bit Oracle 11G 64-bit, PLSQL developer has the following problems: 1. The database drop-down box is blank:2. Enter the username, password, and database. The logon dialog box is displayed: Reference initialation Error Cocould not

1. Balanced It is used to store string or character data. The main types include varchar2, Char, and long. (1) varchar2 Used to store variable-length string or string-type data. during use, you must specify its maximum byte data. (2) Char It is

Translation: each database requires at least one Database Administrator (DBA). A database system may be large and have many users. Therefore, sometimes the database administrator is not working alone, but a DBA group with DBA responsibilities. A

Oracle Study Notes --- (3) 3. 1. Lock To prevent users from concurrently accessing and modifying resources at the same time, ORACLE uses different types of locks to control concurrent access to data to prevent destructive interaction between

1) download Apache_2.2.14-win32-x86-no_ssl.msi Php-5.3.2-Win32-VC6-x86.zip   Oracle instant client Version 10.2.0.4 (or higher) FROM: Http://www.oracle.com/technology/software/tech/oci/instantclient/htdocs/winsoft.html   2) install apache & PHP,