Oracle

Java codeSelect t. *, t. rowid, rownum from test1 t Name KM CJ ROWID ROWNUM Zhang San Language 80 AAAHhOAALAAATSIAAA 1James math 86 AAAHhOAALAAATSIAAB 2James 75 AAAHhOAALAAATSIAAC 3Li Si language 79 AAAHhOAALAAATSIAAD 4Li Si math 85

  The restoration process of redo logs in Oracle databases based on user-managed backup and recovery is described in detail. A log member in the log group is damaged as follows:   You have selected 6 rows. -- Use 360 to forcibly Delete the

  Primary master database IP: 192.168.50.4/24 Dbname: ora10g Database Version: 10g R2 Operating system version: rhel6.0 64-bit Standby physical standby Database IP: 192.168.50.230/24 Dbname: ora10g Database Version: 10g R2 Operating system version:

The content of this lecture mainly includes:   1. Configure the Database Resource Manager   2. Access and create a resource plan   3. Create a resource consumer group   4. Assign commands to the resource consumer group   5. Map Resource Consumer

I. database language1. SQL language: standard language for relational databases2. PL/SQL: Procedural Language3. SQL * Plus: simple reports and operating system interfaces4. After Oracle 8.01 appears:(1) Data Partitioning technology: Applicable only

I have been saving this article for a while and it is very practical. I would like to thank the original author: Angel. John.SQL * Loader is a tool used to import external data from Oracle databases. it is similar to the Load tool of DB2, but has

1. Download the rpm package:Ftp: // 195.220.108.108/linux/ASPLinux/i386/updates/12.1/i386/sysstat-7.0.2-3.el5.asp121.i386.rpmFtp://rpmfind.net/linux/fedora/releases/9/Everything/i386/ OS

-- Rman backup full database:C: \ Documents ents and Settings \ Administrator> set oracle_sid = ora10C: \ Documents ents and Settings \ Administrator> rman target/RMAN> backup database format 'd: \ BACKUP1 \ % U ';-- Compression backup:RMAN> backup

Display and set Environment VariablesTwo methodsUse SQL * plus tool: option --- EnvironmentCommand Line: SQL> show linesize autocommitSQL codeLinesize 80Autocommit OFFSQL> set linesize 200 autocommit on(1) display all environment variablesSQL

Oracle startup small problem Question: ORA-12560: TNS: protocol adapter error Fix: 1. Listening service not started. On the windows platform, perform the following operations: Control Panel --- management tools --- Service to start the

Record the non-null constraint for deleting Oracle table fields at a time. A table structure specifies that a field (such as cno) is not null, and the check not null constraint is added. Now we need to remove the not null constraint so that the cno

Oracle binary type and big object type basics 1. type differentiation NCLOB stores single-byte character data CLOB stores multi-byte character data BFILE stores the pointer to the binary file in the OS file system, files are not stored in the

Check whether indexes need to be reconstructed in Oracle SELECT height, /*Height of the B-Tree*/ blocks, /* Blocks in the index segment */ name, /*index name */ lf_rows, /* number of leaf rows in the index */ lf_blks, /* number of leaf

Oracle: Tablespace & Datafile -- CREATE a local TABLESPACE (LMT) create tablespace test datafile 'f:/temp/test1.dbf' SIZE 5 m autoextend on next 1 m maxsize 10 M, 'f: /temp/test2.dbf 'size 5 M; -- CREATE a dictionary-managed TABLESPACE (DMT) create

[Oracle] online table redefinition-modifying table definitions (DDL) in a 7*24 online production system is very painful, if you use the alter statement directly, an exclusive lock will be placed on the table. That is to say, during this period, all

For execution of dynamic SQL in oralce -- Execute dynamic SQL CREATE OR REPLACE FUNCTION fun_checkguaranteetype (TranId varchar2) return varchar2 is V_result varchar2 (1000); Begin declare zhiyavar NUMBER; diyavar NUMBER; dabaoren NUMBER; v_ SQL

Terminate the running of imp/exp and expdp/impdp processes method 1. Stop the EXP/IMP optimization speed to directly KILL the process, but first KILL the parent process and then KILL the child process, only KILL sub-processes, EXP/IMP will also

This document describes how to enable and disable the Oracle archive mode for a database. 1. shutdown normal or shutdown immediate disable database oracle Training 　　1 .oracle@jumper oracle]$ sqlplus "/ as sysdba"　　2.SQL*Plus: Release 9.2.0.4.0 -

The dual virtual table dual in oracle 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. To view the current user, you can

Solve oracle database connection exceptions caused by IP changes "ORA-12541: TNS: no listening program" before the local machine installed oracle, several databases are commonly used, no exception. But today I use PLSQL to connect to the database,