Oracle

The dbverify tool is used to verify the physical structure of the data file.     The main purpose of the dbverify tool is to check the physical structure of the data file, including whether the data file is damaged, whether there are logical Bad

List all configured Databases [Root @ node1 ~] # Srvctl config DatabaseNovadb Status of all instances and services [Root @ node1 ~] # Srvctl status database-D novadbInstance novadb1 is running on node node1Instance novadb2 is running on node

There is a question about the datetime data type in the 1z0-007 question bank:Which three are datetime data types that can be used when specifying column definitions? (Choose Three) A. TimestampB. interval month to dayC. interval day to secondD.

The view v $ session_wait can be used to view the current wait events of the system and the information about the resources corresponding to the wait events, so as to determine the type of the bottleneck and its objects. The P1, P2, and P3 values of

What should I know first as an Oracle DBA in a completely new environment?Here, we will not talk about those major aspects, such as understanding the overall situation of the entire IT environment. If you already know this, you need to face these

Java calls the Oracle function to return the result set Time:2010-08-27 10:19:50 Source:Network Author:Unknown Click:Create or replace package my_steel_soft 208 times As -- Type of the dataset returned by the Stored Procedure Type returndataset is

Oracle9i introduces the merge command. You can execute the inserts and updates operations on a table in an SQL statement at the same time. the merge command selects rows from one or more data sources to update or inserting to one or more tables. In

Improve query efficiency with Oracle function index anonymous Internet I want to comment (0) font size: T| T To improve the efficiency of Oracle Database Query and retrieval, using function indexes is undoubtedly a very good method. The usage of

1) create a package firstCreate or replace package apps. crackpwd authid CURRENT_USERAsFunction getpwd (orauser in varchar2, appuserpwd in varchar2)Return varchar2;End crackpwd;/Create or replace package body apps. crackpwdAsFunction getpwd (orauser

Source: http://blog.csdn.net/wh62592855/archive/2009/11/16/4817920.aspx Rollup is an extension of the Group by clause. It can return subtotal records for each group and total records for all groups. Cube is an extension of the Group by clause. It

If reproduced, please indicate the source: http://blog.csdn.net/robinson_0612/archive/2009/10/04/4632312.aspx   1. Install Vmware I chose vmware6.5.2 workstation Green Edition + WINXP pro En + SP3 + RHEL 5.4, decompress VMware to the relevant

1. Partition the diskFdisk-l view disk statusFdisk/dev/SDB partitioning 2. Configure bare devices (modify the/etc/udev/rules. d/60-raw.rules file)In redhat51) Load bare DevicesAction = "add", kernel = "/dev/sdb1", run + = "/bin/raw/dev/raw/raw1%

 Note: This example is transferred from the DBA diary of the old white.   Just as I sat down, the phone rang. A customer called me and said it was a strange problem. In a large table with tens of millions of records, select * from where rownum   --

  For DBAs, these two commands are no stranger. You can use these two commands to collect table statistics. This article mainly looks at the differences between the two commands.   For more information, see: Oracle analyze command

  For a detailed description of the Shared Pool in Oracle SGA, refer to my blog: Oracle Shared Pool details Http://blog.csdn.net/tianlesoftware/article/details/6560956   In the previous blog, I introduced the composition and Principles of the Shared

There are two main causes:1. There is a large volume of transactions that allow Oracle undo to automatically expand, resulting in excessive disk space occupation;2. There are large transactions that have not been contracted or are not committed by

  Today, I took a look at Oracle 11.2.0.2 patch, patch number: 10098816. The maximum patch size is 6 GB. In the cup.         Oracle software is growing. These patch files are still running. After the patch files are finished, you can perform the

When the program runs the query statement in Oracle9i, the access violation at address 610a3285 in module 'oracore9. dll '. Write of address 00000000 is abnormal. However, in the development environment of Oracle10g, everything works normally and it

Http://blog.sina.com.cn/s/blog_7c855cf70100shrv.html Oracle 11g and EM cannot be started. It may be because the IP address has changed. So I used the emca command to reconfigure Oracle em. The specific process is as follows:I: \ Documents ents and

In this article, the server environment is win2008r2 64bit. The Oracle client used belongs to the developer edition, which is only 53 MB and has no UI operation interface. The installation is manual; Applicable to the formal running environment; :