Oracle

Sql> select * from V$version;BANNER--------------------------------------------------------------------------------Oracle Database 11g Enterprise Edition Release 11.2.0.1.0-64bit ProductionPL/SQL Release 11.2.0.1.0-productionCORE 11.2.0.1.0

since the project last night batch job extraction data primary key generator problem, emergency resolution with sequence as the primary key. The underlying uses MyBatis to interact with the Oracle database library. she talked with her for a long

I've been doing a thing recently, specifically, we're going to plug the data into the middle of someone's database.The first thing to do is to create an Oracle Dblink to the other database so that we can access their databases so that we could

The most important thing about Oracle tree queries is the Select...start with...connect by...prior syntax. Depending on the syntax, we can list a table-shaped structure in the order of the tree. Below is a list of common query methods for tree

1, install the relevant packageYum install python-devel mysql-devel zlib-devel openssl-devel2. Install Setup, Mysql-python packagewget http://pypi.python.org/packages/source/s/setuptools/setuptools-0.6c11.tar.gzwget

"Original" About Oracle 10g various service parsing (2014/10/16-8:39:40) Time: 2014-10-16 8-58-30 ssslinppp1. When the Oracle 10g is first installed, two Oracle services are set to start automatically, such as: oracleoradb10g_home1tnslister Service

The content in square brackets is optionalCurly braces are required1PL/SQL structure blockDECLARE /* */BEGIN /* */EXCEPTION/* */END/** * 2 Creating a sequence1 CREATESEQUENCE[schema.]Sequence_name2 [{INCREMENT by | START with} integer3 |

Action blob whether this field produces a lot of redo, the answer is No. To do an experiment, the test database version number is 11.2.0.1.0:--Create a table for testingCREATE TABLE Test_blob(ID number,Tupian blob);Import

is required to execute the statement./is required to execute a statement blocksuch as executing a triggerCREATE OR REPLACE TRIGGER ' trg_1 ' before INSERT on ' CATEGORY ' referencing old as ' old ' new as ' new ' for each ROW ENABLEDECLAREV_newval

Problem simulation and problem analysis of library cache pin in Oracle Single instance caseReference from:Waitevent: "Library cache Pin" Reference Note (document ID 34579.1)How do I Find the blocker of the ' Library cache pin ' in a RAC environment?

Steps:1 Export (Backup) Build table statements, stored procedures, triggers, sequences, and all user objects. The. sql file is exportedSelect all exported objects and select the path to export2 export (Backup) table structure and data. Exported as a.

Oracle database is the world's largest database service company developed by Oracle, is currently one of the most mainstream commercial database server products, is widely used in enterprise-level application development, but also in the development

Export of data:1, the database Szda fully exported, the user name sa password sa123 exported to D:\daochu.dmpExp Sa/[email protected] file=d:\daochu.dmp full=y2. Export the SA user in the database with the SYS user's tableExp Sa/[email protected]

Comma separated ', 'SelectListagg (SUBSTR (To_char (Freestarttime,'YYYY-MM-DD HH24:MI:SS'), One,9) ||'~'||Trim (SUBSTR (To_char (Freeendtime,'YYYY-MM-DD HH24:MI:SS'), One,9)),',') withinGROUP(ORDER byTPF. Freeid) asFreetimespan

Test upgrade centos6.6 kernel to Oracle Uek kernelReference:http://www.tuicool.com/articles/IRbU3e[[Email protected] ~]# curl -o https://linux.oracle.com/switch/centos2ol.sh[[email  protected] ~]# sh centos2ol.sh[[email protected] ~]# yum upgradeoh  

Problem:Oracle One-R2 64-bit installation is complete after the Network/admin directory does not actually have Tnsnames.ora and Listener.ora filesSolution:The problem is that before I installed another version of Oracle, I was installing Oracle XE

System: RHEL6.5 + oracle11g x86_64 (installation on CentOS is similar to this)Use local Yum source (download Pdksh package in advance), specific process reference (for Rhel/centos): http://www.cnblogs.com/chinas/p/4536181.htmlFirst, the official

Problem DescriptionIf Oracle stores number (20,2) data, 0 is 0.00 in the database, 2.1 is 2.10 in the database, 3.88 is stored as 3.88,If the corresponding display is taken directly from the database:0 2.1 3.88 the reserved two decimal places will

The data tables are connected with:1. Inner Connection (natural connection): only two rows that match a table to appear in the result set  2. External connection: including(1) Left outer connection (the table on the left is unrestricted)(2) Right

The fourth day of oracle Learning1. Review in the previous section2. Database Administrator3. Logical backup and recovery of databases4. Data Dictionary and dynamic performance View5. Manage tablespaces and data files1. Understand the basic