Oracle

  When NET is configured on the local machine, the following error message is displayed:   In this case, the configuration is not successful at all. Even if all the parameters are configured, the operation fails during saving. In Oracle10g, the

  Shutdown has four parameters:   NORMAL, TRANSACTIONAL, IMMEDIATE, and ABORT. If no parameter is specified by default, the value is NORMAL.     Shutdown normal: do not allow new connections, wait for the session to end, wait for the transaction to

Basic information:Operating system version: CentOS-5.6 X86-64Cpu: 2*12Memory: 16 MBDatabase Version: 10.2.0.4Number of nodes: 2When installing the system,/etc/sysctl. conf is not configured as optimal. In fact, for CentOS5.6-64, kernel. shmall and

The VNC service installs oracle on a remote server. When new users install oracle, they will always encounter one or more problems. Next I will describe the installation process in detail. In fact, oracle installation is very simple, it is not

We all know that alter table move or shrink space can contract segments to eliminate part of row migration and space fragments, so that data is closer. However, moving and shrink space are different.Move will Move the high water level, but will not

During Oracle 11g installation, the following two problems are frequently encountered: Oracle 11gORA-00845: MEMORY_TARGET not supported on this system descriptionHttp://www.bkjia.com/database/201202/119409.html [INS-35172] Target database memory

Alter session set query_rewrite_enabled = true; Alter session set query_rewrite_integrity = enforced; Create Create materialized view my_all_objects_aggs Build immediate Refresh on commit Enable query rewrite As Select owner, count (*) from

A long time ago, when I was still at X Tang Telecom, I was asked by the leaders to optimize an SQL statement. At that time, I did not know what SQL optimization was at all. However, after Baidu and google found that all the materials had such a

Guidance:A few days ago, we used the Package to complete the streams configuration. However, it would be more intuitive to use the OEM in management. Of course, it would be almost the same if we knew all the related packages. In 9i OEM, it seems

Two recent Oracle Database faults are related to the firewall. The firewall here is a hardware network firewall, not a software firewall. Let's talk about it briefly. An Oracle 9i running on a Windows system, the client cannot connect to the

Common Oracle database objects-Sequence1. sequence: a database object provided by oacle for generating a series of unique numbers.A) sequence featuresI. The unique value is automatically provided.Ii. shared objectIii. Mainly used to provide the

Common Oracle database objects-indexes and synonymsI. IndexA) advantages of using IndexesI. A table-independent schema object that can be stored in a disk or tablespace different from the tableIi. If the index is deleted or damaged, it does not

1. Modify the maximum number of connections in Oracle. a. log on to PL/SQL or Worksheet B as sysdba and query the current number of connections; c. Change the number of system connections alter system set processes = 1000 scope = spfile; d. create

Motivation: You want to use an SQL statement in Oracle to perform Insert/Update operations directly. Note: When writing SQL statements, we often encounter a large number of Insert/Update statements at the same time, that is, when there is a record,

The main function of minus operations is: When two tables or two query results are performed, returns records in the first table/query result that are different from the second table/query result. For example, the data in Table A is as follows: id

DECODE function: Compares the input value with the parameter list in the function and returns a corresponding value based on the input value. The parameter list of a function is a sequence of several numbers and their corresponding result values. Of

1. for in the stored procedure, you can use for in. If you can enumerate for a in 1 .. 12. It is 12 cycles. Note that there are two vertices in the middle, not three. after insertion or deletion, remember to write commit; otherwise, the stored

In some businesses, you may need to connect the joined table to the master table to obtain the desired result. This is a bit like Conditional compilation. join is performed only when the criteria are met. If the criteria are not met, no join is

I have read articles on the Internet, and there are several possible reasons for Garbled text: 1. operating System Character Set 2. character Set of oracle server 3. character Set of the Client 1. view the oracle Character Set Java code select

1. translate Syntax: TRANSLATE (char, from, to) usage: returns a string that replaces each character that appears in from with the corresponding character in. If from is longer than to string, the extra characters in from are deleted. One of the