Oracle

Feel that some netizens always put forward some very basic questions, for example, there is no function to achieve such functions ah, what is the function of Ah, what the format is, and so on, but also feel their understanding of the lack of Oracle

Linux logs on to an Oracle user and starts the database with the Lsnrctl Start command with the following error: "[Oracle@localhost ~]$ lsnrctl start Lsnrctl for linux:version 11.2.0.1.0-production on 29-apr-201507:38:11 Copyright (c) 1991, 2009,

The use of the intranet environment, so the use of user name password authentication, we recommend the use of key authenticationcheck.pyImport paramiko# get SSH connection and execute Shellcomand return correct result def Doshell

The purpose of the code is to first serialize a configuration class jobconfig into a blob in Oracle and then deserialize it when it is checked.Check the console error first# # Cause:com.audaque.lib.core.exception.AdqRuntimeException:error on

"Confirmation: At this time you may want to check/dev/random this device file. can be used cat/dev/random to see its content, if you find that he has not shown anything ﹝ may be garbled numbers and the like ﹞, that is, it is a problem. Through the

Recently in the customer site to build a disaster tolerance environment, found that encountered a bug, in the case can not be resolved, give up the broker, can still achieve adg,oracle can't realize the dual-master, but MySQL can ha. The official

Oracle 12C r2-new features-pdb disk I/O (iops,mbps) resource managementIn previous versions, there was no easy way to control the amount of disk I/O used by a single PDB. As a result, a PDB may run out of disk I/O and affect the performance of other

Recently, while looking at some Oracle shares, often mentioned that the export of ash dump to other people to do the analysis, but I do not have any relevant operation, do not know what is the operation of the process, so the Internet read a variety

Oracle 10g To download Oracle, you also need to register a user name for your convenience. User: wangdetian168@gmail.com Pass: qwe123qweThe password is normal. You don't need to retrieve it.Every change is troublesome.If necessary, you can

Question 2 SQL * Plus Copy commandProblem descriptionIn SQL * Plus, how does one implement data replication between different tables, whether local or remote?Problem AnalysisThe Copy command in SQL * Plus allows you to copy data between a remote

After installing MySQL, configure the environment variables and then Input MySQL Go to MySQL Then you can Use MySQL; Select * from user; To view all users; Execute the script file in MySQL: Mysql> source XXX. SQL; 1.1 add users in two ways: (convert)

  The database is upgraded from oracle10.2.0.5 to 11.2.0.3: Oracle uses RMAN to directly restore the database from 10g to 11g. Http://blog.csdn.net/tianlesoftware/article/details/7311352   This problem occurs during the upgrade, and the problem is

How to limit the size of returned result sets in Oracle and MySQLIn ORACLE: How can I use rownum to limit the number of rows returned by a query?Software environment:1. Windows NT4.0 + Oracle 8.0.42. Oracle installation path: C:/orant Description:1.

Original: http://blog.csdn.net/robinson_0612/archive/2010/04/26/5529239.aspx   -- ===================================================== === -- Oracle instance and Oracle Database (Oracle Architecture) -- ==============================================

Dd description: Assume that I have a file named aaa.gz with a size of 81234 kb. I want to use the DD command to implement the following Backup results: first, divide the snapshot into three shards. The first Shard is the first 10000 KB of the

Now there is a table (MT) with at least million data every day, and we plan to build a partition table in the form of monthly partitions. When partitioning, "Let Oracle run faster 2" said p21: SQL>alter system set

Oracle learning materials Http://bbs.51cto.com/thread-1010463-1.html 1) 132 Oracle popular boutique data http://bbs.51cto.com/thread-933811-1.html2) Oracle dual machine Hot Standby detailed configuration rose hahttp: // bbs.51cto.com/thread-652501-

In J2EE application development, establishing a connection between an application and a database is a common problem. Here I will talk about connecting to the Oracle database through OCI, thin, and JdbcOdbc in local applications, configure the

In the database, a null value is used to indicate that the actual value is unknown or meaningless. In a table, if a column in a row has no value, it is called NULL ). A null value can be returned for any data type column as long as the non-NULL or

Oracle SQL removes Chinese characters and retains numbers or letters. First, let's talk about oracle translate usage: 1. Syntax: TRANSLATE (string, from_str, to_str) 2. Purpose: Return (all appear) replace each character in from_str with the string