Oracle

Objective Oracle provides several packages that can be used to accomplish many tasks, from internal process communication to file I/O, to dynamically create and execute SQL statements in Pl/sql blocks. All of these packages are owned by the SYS

Q: Hello, I ran the following code in the Oracle 9i database: CREATE OR REPLACE TYPE persona as OBJECT (ident varchar2 (9), nombr varchar2 (30)); CREATE table Tper (per persona); INSERT into Tper values (Persona (' n ', ' Lucas ')); SELECT * from

Problem Description: Implementation of the Oracle automatic backup script. Error tip 1: Message file RMAN.MSB not found Verify that Oracle_home is set properly 。。。。。。 Error Reason: Automatic execution does not recognize the appropriate

Oracle 10g introduced a new table space type, which is a large file (Bigfile). It does not consist of 1022 files as traditional table spaces; a large file (bigfile) tablespace is stored in a single data file, while its data volume requires a larger

Principles of Database Physics design 1.1 Database Environment Configuration principles 1.1.1 Operating System Environment: For small and medium-sized database system, the use of Linux operating system is more appropriate, for the database

Session leader and Apps Associates founder, CEO Sridhar Bogelli is based on mass application development advisor, warns Oracle developers should properly use the tools provided by Oracle and Third-party vendors to help them and their companies avoid

RAC is a cluster of Oracle companies, and there are many articles on the web that introduce the RAC configuration. But holding these wonderful documents doesn't necessarily make the RAC configuration successful. Because RAC is a very complex

No index operation master table data on foreign keys often causes blocking and deadlock problems Blocking caused by a foreign key: Session 1: Sql> CREATE table p (ID int primary key) tablespace users; Table has been created. Sql> CREATE TABLE R

Although Oracle's deterministic statement is intended to ensure the certainty of functions, it can be used to raise performance when used rationally. This article describes the effect of array on performance. With regard to the deterministic

1. Test environment 03:57:50 sql> Conn Scott/tiger Connected. 03:57:57 sql> 03:59:43 sql> SELECT * from tab; Tname Tabtype Clusterid ------------------------------ ------- ---------- Exceptions TABLE LXTB1 TABLE LXTB2 TABLE Salgrade TABLE

Last month, I had the opportunity to hear TUSC's rich Niemiec about Oracle's performance analysis issues in the Dallas Oracle user group, one of the tips he gave us, which I felt was very beneficial, that Statspack still needed in Oracle 10g. The

From the composition of the SGA of Oracle, it is highly recommended to use parameter bindings. Using parameter bindings makes it possible to use the share Pool efficiently, which can significantly improve performance by not having to harden the

Codesmith is a code generation tool for. NET, and many of its own templates are almost all systems for SQL Server architecture, and when Oracle is used, many templates need to be customized because of the differences between Pl-sql and T-SQL. There

The following function is the function I write when I write the Oracle database stored procedure, I feel that this function is more versatile, so it is published for the reference of the people who need it. This function is primarily used to remove

Abstract This paper describes the principles, procedures, limitations of the hierarchical manager, and combines with Oracle Data Warehouse to realize the effective storage, management of geo-data and rapid browsing of large range of data. keyword

1. First look at the name of the tablespace and the file you belong toSelect Tablespace_name, file_id, file_name,Round (bytes/(1024*1024), 0) Total_spaceFrom Dba_data_filesOrder BY Tablespace_name; 2. Additional Data files Alter tablespace users

Oracle has launched a new execution plan with two tips native_full_outer_join and no_native_full_outer_join to control this execution plan. The use of these two hint is simple and requires no additional parameters. The following example continues

1 Create a script (replace is to modify a script that already exists) Rman> Create script Users_bak { 2> backup datafile '/u01/app/oracle/oradata/prod/users01.dbf ' format '/disk1/rman/prod/users_%s.bak '; 3>} Created Script Users_bak 2 View

Today, a brief introduction to the target= "_self" >sga setting method 1.sga_target parameters alter system Set Sga_target = 40000m Scope=both; Characteristics: 1). ASMM Automatic shared memory management A: Sga_target parameter control ASMM

In 11g, Oracle has made further enhancements in statistics. This article introduces pending statistics. In 10g, Oracle provides a way to restore statistics, which causes problems that can be solved quickly by restoring the original statistics. In