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Oracle how to ensure the ACID principle of transactions -- oracle Core Technology Reading Note 2, acid -- oracle There are four general principles in the transaction that all databases must comply with, referred to as the ACID principle. The following briefly describes how oracle implements these four principles. 1. A
1.oracle InstallationRefer to http://wenku.baidu.com/view/d01ffd43336c1eb91a375d68.html, no longer repeat here2. Command line sqlplus Connect Oracle(1) Check the monitoring statusc:\>lsnrctl StatusLsnrctl for 32-bit windows:version 9.2.0.1.0-production on 2 August-June-2005 11:01:01Copyright (c) 1991, 2002, Oracle Corporation. All rights reserved.Connecting to (D
collected packages:cx-oraclerunning setup.py install for cx-oracle ... done SUCC Essfully installed cx-oracle-5.2.1sh-3.2# python python 2.7.10 (default, OCT, 19:19:21) [GCC 4.2.1 Compatible Apple LLVM 7.0.0 (clang-700.0.59.5)] O N Darwin Type "Help", "copyright", "credits" or "license" for more information. >>> Impor
Today, with the NAVICAT for Oracle connection Oracle because it used to be connected with pl/sql, since the use of a period of time navicat for MySQL found good, the whole software is very small. When you can connect, the username, password, and address are all correct, just can't connect. The following error occurred: It means: You cannot create a OCI environment; The problem is that we need to co
here is only 11g, and I use 12c here, was also worried for a long time, afraid of unusable, and later confirmed that 11g RPM package is also available in the 12c Oracle The database used above, the link in this http://sourceforge.net/projects/cx-oracle/files/5.1.2/cx_Oracle-5.1.2-11g-py26-1.x86_64.rpm/ Download everyone can download the corresponding RPM package
Some of the basics of Oracle have been learned some time ago, and for ease of practice and operation, an Oracle 10g was installed. After the installation, the book was directly discarded. Card to the death, card to directly can only be used as the Internet. At that time because of busy also do not do other things, so has not been in charge of it. Make up for the last Internet café. The two days are free. So
How to view and modify the oracle Character Set and view the oracle version ?, Oracle Character Set1. view the database Character Set Database Server Character Set select * from nls_database_parameters, which is derived from props $ and represents the character set of the database. Client Character Set environment select * from nls_instance_parameters, which is f
Oracle (zero) --> pseudo-column and group aggregation (starting from Oracle, relatively beginner ~), OracleIn the beginning ~It's time to start school .. What does it have to do with me ..), After all, I took up my job even though I didn't know what it was during the summer vacation. I watched my classmates show around me. = It's too much. Just try again .. I learned Or
ORACLE-013: kill deadlock process in oracle, oracle-013oracle In oracle, stored procedures or functions that frequently access packets may cause deadlocks. Scripts of deadlocked objects cannot be run, causing freezing or an exception: too many connections are opened. In this case, you need to use the dba account to k
ORACLE-018: ORACLE tip 001 string processing, oracle-018oracle 1. truncate a string Oracle uses a function substr to intercept a string. The parameter is substr (string, start position, and truncation length ), For example, if the string 123,112 needs to be removed by a comma, the truncation function is as follows:
Method One: Use the Pl/sql Developer tool to export:Menu bar---->tools---->export Tables, the following figure, set the relevant parameters can be: Method Two: Use CMD's Operation command to export, the details are as follows:The 1:g:\oracle\product\10.1.0\client_1\network\admin directory has a Tnsname.ora file that reads as follows: Copy Code code as follows: Cmstar = (DESCRIPTION = (Address_list = (address = (PROTOCOL = TCP) (H
Oracle User Management First, the concept of the user Users, or user, is a popular way to access Oracle database "people." In Oracle, the user's various security parameters can be controlled to maintain the security of the database, these concepts include schemas, permissions, roles, storage settings, space quotas, access resource constraints, database auditing
EXP Export Oracle database table: (as native administrator), refer tohttp://jiqinlin.iteye.com/blog/758469 Export TABLE: Exp username/password @localhost (IP address): Port number/Database instance name file= local address \ Want to generate an indication. DMP owner= (username, Password) eg:exp C # #tjuser/TJUSER@LOCALHOST:1521/ORCL file=c:\adc160624.dmp owner= (C # #tjuser, Tjuser)//tables under the current user database name, instance Name query: (A
Tags: process build rail info from BSP content lag stop For non-Oracle DB, SQL Server is a sample description: My train of thought A:oracle DB production B:oracle DB Intermediate machine C:sqlserver db destination a-> b->c Note: B on both the rep process also has the EXT process, at this time. There is also a need to establish a rep process for B.A->b can complete the online initialization synchronization (EXPDP based on SCN number)After the initializ
Tags: Oracle goldengate initial Load methodNon-Oracle DB is illustrated with SQL Server as an example:My train of thoughtA:oracle DB production B:oracle DB Intermediate machine C:sqlserver db destinationa-> b->c Note: B on both the rep process and ext process, at this time, C also need to establish a rep process for B.A->b can complete the online initialization synchronization (EXPDP based on the SCN number
1. Oracle Installation Please refer to the following link for more information: http://wenku.baidu.com/view/d01ffd43336c1eb91a375d68.html. 2. Use the command line sqlplus to connect to Oracle (1) Check the listening status C: \> LSNRCTL status LSNRCTL for 32-bit windows: Version 9.2.0.1.0-production on 2005 11:01:01 Copyright (c) 1991,200 2, Oracle Corporation. A
It takes a day and a half to resolve the client connection to the Oracle database on the server side, unable to connect the problem. Ora-01034:oracle Not available (ORACLE does not exist), ora-27101:shared memory realm does not exist analysis:A few days ago you can also connect to the database, but yesterday, the local no reason to connect to the server database.
Oracle Server entry and oracle management routineI. Common oracle database management toolsOracle Universal Installer (OUI): used to install, upgrade, or delete Software ComponentsOracle Database Configuration Assistant (DBCA): a graphical user interface tool that interacts with OUI. It can also be used independently to create, delete, or modify databases.SQL * P
What is a relational database? Oracle database architecture, Oracle cluster introduction, and oracle Architecture What is a relational database? Databases based on Relational Models. What is a relational model? Use rows and columns in a two-dimensional table to maintain the data model. Oracle database architectur
Tags: style blog http ar file Data SP Div 2014 1 installation Knowledge of Oracle (oracle10g and oracle11g version differences ) :A the installation directory should not have Chinese and white spaceB oracle10g support winxp does not support win7,8 and vista;oracle11g supports all versions2 oralce Server: comprised of Oracle instances and Oracle datab
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