C # insert Timestamp data in Oracle In project development, it is required to save the time in milliseconds. Although the DateTime type in C # has the Millsecond attribute, the data in milliseconds cannot be saved when the Timestamp type Oracle
Oracle-provides dynamic result sets for subqueries We have encountered such a requirement: to input a String for the method, such as "User ID0, user ID1, user ID2... ", then return a result set based on these IDs as a data table for query by
XtraBackup online MySQL Master/Slave deployment 1 [Preface] There are many master-slave deployment methods for MySQL. The most common method is mysqldump. As we all know, mysqldump has two major disadvantages: 1. The master database needs to lock
Oracle 11g elastic uard automatic start service Oracle 11g elastic uard automatic start service Only for better performanceJust to do better Script name: oracledg #! /Bin/bash# Chkconfig: 2345 98 01# Description: Oracle database migration uard
Oracle 11g enables the flash back function Flashback During the Oracle database creation process, you are usually prompted whether to enable the flash back and specify the size of the flash back recovery area. I usually choose not to enable it. In
Oracle optimization practice (variable binding) Variable binding is the primary tool for Oracle to solve hard parsing. It can solve the excessive consumption of librarycache in OLTP systems to improve performance. However, the knife is worn too fast,
Oracle partition table data migration and Management Automation Process The following process is centered on the company's Oracle Database runtime environment. It is mainly written to achieve automation.Process completion tasks include1.
Implement PostgreSQL failover in CentOS 6.5 Pgpool-II is an intermediate component that works between the PostgreSQL multi-server and the PostgreSQL Data Warehouse client. It provides the following functions: Connection Pool: pgpool-II is used to
PostgreSQL Stream mode construction PostgreSQL Stream mode construction 1. Compile and install Yum install-y gcc-c ++ automake autoconf libjpeg-devel libpng-devel freetype-devel libxml2 libxml2-devel zlib-devel glibc-devel glib2 glib2-devel bzip2
MySQL database master-slave synchronization, mysql database master-slave 1. PreparationsPrepare two machines and install a MySQL database respectively. For example 10.254.141.23 as the primary database10.254.166.60 as the slave Database For MySQL
New Features of oracle11g-SQL Plan Management (SPM) and oracle11gspm 1. Introduction Oracle Database11gR1 introduces SQL PlanManagement (SPM), a new tool that allows DBA to capture and maintain the optimal execution plan for any SQL statement. This
Check whether the sp called in tidal job is actually running. Just now, the tech leader of us suddenly called me and said that one of the tidal jobs had crashed. Let me help you to find out why And Then rerun got up. At that time, I was dizzy, ask
Oracle uses a string-indexed two-dimensional array and an oracle two-dimensional array -Reference: http://www.oracle.com/technetwork/issue-archive/2014/14-sep/o54plsql-2245345.html-SAMPLE DATAStore name product salesA apple 3000A banana 2000B APPLE
New Feature of oracle11g-Adaptive Cursor Sharing (ACS) and oracle11gadaptive 1. ACS Overview Oracle Database 11g provides the Adaptive Cursor Sharing (ACS) function to overcome the possibility of Sharing a Cursor that should not be shared in the
MySQL O & M-routine maintenance operations, mysql-Routine Maintenance Reprinted please indicate the source:Http://blog.csdn.net/guoyjoe/article/details/46697825 I. Linux kernel and release versionUname- Cat/etc/issue Ii. glibc version /Lib/libc.
Mongodb Study Notes 07: mongodb Study Notes Export export in json or csv format Using import to import json or csv Mongodump exports binary bson structure data and index information Mongorestore imports binary files Mongoexport -H host --
Libclntsh. so.11.1 active, libclntsh. so.11.1 Problem of applying a database patch on a database host with OGG deployed $ ORACLE_HOME/lib/libclntsh. so.11.1 active The following error message is displayed: [oracle@lei1 17579684]$
Database Review 11-relational model and paradigm, and database Review 11 paradigmDatabase review CH11 relational model and paradigm 11.1 Relational Model Design The Schema is the logical structure and feature description of all data in the database.
Mysql lock on the second day, mysql on the second day If there is no lock, the concurrency will be stronger, but the data security will be problematic. Therefore, the database locks the data.Shared lock and exclusive lock That is, the read/write
Database review 10--PL/SQL, database review plsqlDatabase review CH10 PL/SQL10.1 PL/SQL Introduction PL/SQLIt is an Oracle procedural extension of SQL. PL/SQL can implement SQL-related procedural programs andStored ProcedureAndFunctionAllows SQL