Oracle

The oracle bat SQL Execution project team has a requirement: In all tablespaces starting with XXX, create a table named test and organize it. bat file, after a day of tossing, constantly ask du Niang, finally completed the task, next to the process

The oracle memory structure is composed of two parts: sga (system global area) and pga (program global area ). SGA: allocated when an instance is started. It is an integral part of the instance. PGA: a service process is allocated with one PGA when

All permissions in Oracle: grant alter system to zys; grant audit system to zys; grant create session to zys; grant alter session to zys; grant restricted session to zys; grant debug connect session to zys; grant create tablespace to zys; grant

As you all know, you can press F5 in pl/SQL and F6 in SQL developer to view the SQL Execution plan, but you want to display the detailed information, use the following command. Set autotrace traceonly explain can use this command in the sqlplus

How Does oracle check which users are connected to the database? execute the following statement: select username, serial #, sid from v $ session; --- query the user session alter system kill session 'serial #, sid '; --- Delete related user

Oracle index description-1. Index features: 1. By creating a unique index, You can ensure the uniqueness of each row of data in the database table. 2. Data retrieval speed can be greatly accelerated, which is also the main reason for index creation.

SQL query used in oracle development the number of levels 2, 3, and 4 under the level 1 category SQL code SELECT temp. cname, temp. rootcid, (select count (1) FROM show_tb_category t1 WHERE t1.flag = 2 AND t1.rootcid = temp. rootcid) category2,

An ERROR occurred while connecting to the database prompting the archive to solve (1) problem [SQL] SQL> conn hr/hr error: ORA-00257: archiver ERROR. connectinternal only, until freed. warning: You are no longer connected toORACLE. (2) After the

The recursion data in the tree query table of common Oracle databases is as follows: id name parentid1 food classification-12 Meat 13 vegetables 14 product classification-15 health care products 46 Medicine 47 Building 4 a oracle implementation

Rman backup error Message file RMAN . msb not found problem linux rman backup error message is obviously unable to find the rman command, path has a problem, or the environment variable [oracle @ redhat/] $ mailMail version 8.1 6/6/93. type? For

A friend asked me a few days ago about oracle user password restrictions whether the oracle user password can be signed @. I was asked down for a moment and immediately flipped through the document. However, neither the Administrator's Guide nor

Several methods for obtaining an oracle execution plan: 1.set autotrace onI believe this method is the simplest and most commonly used method. This method is often used to analyze an SQL statement. Here the syntax is pasted, which is simple: SQL>

Oracle view encoding and modify encoding first view the oracle database encoding SQL> select * from nls_database_parameters where parameter = 'nls _ CHARACTERSET '; PARAMETER--------------------VALUE--------------------NLS_CHARACTERSETAL32UTF8 which

Oracle SQL statement concatenation character Java code select city_std | '/' | stationname as name_std, city_std from station s, (select substr (s. name_std, 0, instr (s. name_std, '/')-1) from dual) | '. '| (select substr (getxtxx (s. maintainunit),

Summary of Oracle ROWNUM and paging query: SQL code DROP TABLE TT3; CREATE TABLE TT3 AS SELECT * FROM DBA_OBJECTS WHERE ROWNUM N is an invalid OWNER OBJECT_NAME ROWNUM ---------------------------------------------------------------------------. It

A developer email was sent last night when a specific oracle user failed to log on to the database, saying that the following error occurred when using PL/SQL dev to log on to the database. Please handle it: I am also depressed when I see this error,

Procedure and function programming procedure in plsql: Stored procedure eg: create or replace procedure p -- the difference between procedure and plsql is cursor c is select * from emp2 for update; -- v_temp c % rowtype; begin for v_temp in c loop

PLSQL Developer connects to the Internet Oracle Server database 1. In the Oracle installation directory, find product \ 11.2.0 \ dbhome_1 \ NETWORK \ ADMIN \ tnsnames. ora file to open tnsnames. add the following content at the end of the ora file:

The three configuration files of ORACLE are described in the installation directory $ HOME/network/admin of oracle. ora tnsnames. ora listener. ora files except tnsnames. ora, the detailed usage of the other two files is not well understood by many

Oralce stops running and cannot solve the problem. First, find "session" in the plsql tool ", you can check that the sid corresponds to "ACTIVE" to check which program is run in SQL text. 1 \ -- Query sid select * from v $ session t1, v $