Oracle

Initialize and assign values to Oracle collections (composite arrays (index tables), nested tables, variable-length arrays, and record-type nested tables, and their differences-nested tables and variable-length arrays must be initialized before

Oracle Hack With As requirement: there is an old permission table With 7 levels (1-7 ). Except Level 1, each user ID is associated with a superior user ID. Www.2cto.com creates a new table and extracts the IDs of each person corresponding to the

Oracle Data complex type (1) 1. pls_integer ------ this type is calculated by the cpu. Some overflow may cause errors, but the speed is fast. binary_integer --- It is executed by Oracle and will not overflow, but the execution speed is slow, because

EXP-00091 Exporting questionable statistics solves the problem of EXP-00091 Exporting questionable statistics in our EXP process on Oracle. in fact, it is the exp error message, which is generated because the environment variable where our exp tool

Linux RAC Environment check script echo "#******************************* OS check ******************************* "www.2cto.com echo 'hostname' echo "kernel" echo "# check OS" echo "kernel" uname-aecho "# check swap" echo "kernel" freeecho "# check

A connect by prior... start with nonsense test code. www.2cto.com Java code create table test_table_c (id number primary key, description varchar (255 ),Parent_id number); insert into test_table_c (id, description, parent_id) values (1, 'cuiyaonan2',

Oracle database stored procedures and task calls in oracle databases can be scheduled to call stored procedures by creating dbms jobs.What about creation? Although there are some materials on the Internet, the syntax is still 'amazing. I tried it

The problem is as follows:Www.2cto.comActual test conditions: -- create table G_PRODUCT_REL (PRODUCT_ID NUMBER not null, -- Business id PC_ID NUMBER not null -- business category id) SELECT 'insert INTO G_PRODUCT_REL (PRODUCT_ID, PC_ID)VALUES ('| G.

Rac installation fails or you want to reinstall it. On the existing machine, you should clear the items that cannot be successfully installed once. Sometimes you may have to wait for multiple times. In this way, you need to clear the previously

Solution 1: If the Console is not installed on the database machine or the network service name is not configured using the Console. you can log on to the idle process on the server by running the command sqlplus sys/sys as sysdba. See step 4.

The Oracle database connection test is a database connection test class, which can be easily used after being saved. Www.2cto.com DBTest. java testing Java code import java. SQL. *; public class DBTest {/*** @ param args */public static void main

Migrate tablespace and data files from ASM to file system 1.2.1. tablespace and data file migration-from ASM to the file system www.2cto.com RMAN> backup as copy datafile 5 format'/u01/oracle/10g/oradata/gt10g/gtlions01.dbf '; starting backup at

Oracle collection two-dimensional operations Oracle collection is an object used in pl SQL development. It represents a group of ordered elements. The types of elements in a group must be consistent. It is divided into three categories: Associative

Oracle random row fetch statement: 1. full table scan 2. sample table Scan www.2cto.com Full table Scan (Full table Scan) Full table Scan returns all records in the table. Perform a full table scan and read all records in the Oracle table to check

OCP question analysis _ 042: control file backup and dumping (I) backup of the control file www.2cto.com backup and recovery the key principles in the database backup and recovery process are: after the physical structure of the database changes,

Oracle R & D skills summarized in the oracle R & D skills record. If you have any suggestions, please leave a message to supplement Oracle R & D skills www.2cto.com 1. oracle elementary skills 1.1 SQL High Performance Optimization 1.2 table design

Eight Important Notes for Data Guard to deploy the physical standby database. These eight points are mainly for deploying www.2cto.com for DG after 10g R2. ① The master database is set to force logging mode [SQL] idle> select force_logging from v $

Control File restoration scenario 1: rebuilding control File www.2cto.com • You 've experienced a failure and lost all of your control files, and youBelatedly realizethat you don't have a good binary backup of the control file. • You want to change

In oracle, The utl_file package reads and writes files. In oracle, The utl_file package provides some functions and procedures for operating text files, and learns the basic operations www.2cto.com 1. create a directory and authorize the user --

Oracle code modification SQL> shutdown immediate; Database closed. www.2cto.com Database dismounted. ORACLE instance shut down. SQL> startup mount; ORACLE instance started. total System Global Area 849530880 bytes Fixed Size 1339824 bytes Variable