Bulk collect for batch processing of multi-row data

Bulk collect for batch processing of multi-row data When writing pl/SQL statements, a typical mode is often used to define a cursor and process the values cyclically from the cursor.Similar to the following formatDeclareCursor xxxx is

Create a MySQL table cyclically and update the two tables.

Create a MySQL table cyclically and update the two tables. Create tables cyclically Using Stored Procedures DELIMITER // Create procedure test. create_channel_avail () BEGIN DECLARE '@ I' INT (11 ); DECLARE '@ sqlstr' VARCHAR (2800 ); SET '@ I' = 1;

MySQL Operation Specifications (Summary)

MySQL Operation Specifications (Summary) User permission management Create user Command: create user 'username' @ 'host' identified by 'Password '; Note: Username Host specifies the host on which the user can log on. If the local user can use

MySQL master-slave synchronization configuration records

MySQL master-slave synchronization configuration records /**************** MySQL master-slave synchronization configuration records (5.1.17 and later versions) ********************/ Create a mybackup user on the master database. The user will

ORA-01555 Problem Analysis and Solution

ORA-01555 Problem Analysis and Solution Today, my colleague sent me a problem, throwing a ORA-01555 error when running a Job, hope we can see what can be found from the database layer. The error log is as follows: Function: EntitySQLCursor:

Analysis and Solution to the Problem that MRP cannot be started in Data Guard

Analysis and Solution to the Problem that MRP cannot be started in Data Guard I have a dedicated uard environment on hand, because it has been useless for some days. As a result, I was suddenly prepared to start learning, and suddenly found that

Queries users who use a tablespace and queries the table space.

Queries users who use a tablespace and queries the table space. Original works, from "Deep Blue blog" blog, deep blue blog: http://blog.csdn.net/huangyanlong/article/details/46912403   Yesterday, I gave some suggestions on how to find out which

ORA-1092: opitsk aborting process --- killed by oom killer, opitskaborting

ORA-1092: opitsk aborting process --- killed by oom killer, opitskaborting Oracle version: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0-64bit Production OS version: Linux x86 64-bitOracle alert Log error: opiodr aborting process

449th questions, 053449

449th questions, 053449449. Which of the following objects can be directly referenced by a window object? (Choose all that apply .)A. Schedule objectB. Program objectC. Job objectD. Resource planE. Resource consumer groupAnswer:AD Creates a window

MySQL client server command summary, mysql client server

MySQL client server command summary, mysql client server MySQL contains the [client] and [mysqld] sections in the configuration file, and MySQL has its own client commands and server-side commands. The following is a brief introduction. ① If the

Use a windows client to connect to the postmaster and linuxpostmaster on a linux Server

Use a windows client to connect to the postmaster and linuxpostmaster on a linux Server1. Modify the pg_cmd.conf file on the server.Modifying filesHost all 127.0.0.1/32 trustAs follows:Host all 0.0.0.0 0.0.0.0 trust2. Modify the postgresql. conf

MySQL logon and mysql Logon

MySQL logon and mysql Logon1. Question 1: You cannot log on after changing the password using update mysql. user set password = 'root' Solution: perform the following steps. (1) Close mysql (kill the mysqld process) and run the following command:

Install and use Memcache

Install and use Memcache I. Resource download You must install libevent before installing memcached. Bytes Decompress the two installation packages to the installation directory (the installation directory is determined by yourself)   Ii. Install

Redis expiration key deletion policy and redis expiration key policy

Redis expiration key deletion policy and redis expiration key policy We have learned that Redis is a memory database, and data in Redis is stored in the memory in the form of key-value, which is maintained and managed by the Redis server, memory is

Was system error logs contain a large number of missing identifiers and was

Was system error logs contain a large number of missing identifiers and was Original works, from "Deep Blue blog" blog, deep blue blog: http://blog.csdn.net/huangyanlong/article/details/46909941   Recently, when I checked was logs for a resident

MySQL dynamic SQL statement execution uses time as the table name, mysqlsql

MySQL dynamic SQL statement execution uses time as the table name, mysqlsql1. Description When using data, we need a lot of databases and want to use time as the table name to differentiate them. However, MySQL does not support using variable names

Detailed working principle of Hadoop Distributed File System HDFS,

Detailed working principle of Hadoop Distributed File System HDFS, Hadoop Distributed File System (HDFS) is a distributed file system designed to run on common hardware. HDFS is a highly fault tolerant system and is suitable for deployment on cheap

Fun SQL-create a specified data type and fun SQL data type

Fun SQL-create a specified data type and fun SQL data type Original works, from "Deep Blue blog" blog, deep blue blog: http://blog.csdn.net/huangyanlong/article/details/46908843    Fun SQL -- create a specified data type   In an article, I found

Changes in MYSQL source code compilation and MYSQL source code compilation

Changes in MYSQL source code compilation and MYSQL source code compilation For Mysql installation, the source code compilation method for mysql of different versions is different. 5.6.2 has changed from configure to cmake, related to the new

MySQL Study -- Use of graphical tools in MySQL (MySQL Query Browser), -- mysqlbrowser

MySQL Study -- Use of MySQL-type tools (MySQL Query Browser), -- mysqlbrowserMySQL Study-MySQL-type tools (MySQL Query Browser)System Environment:Operating System: Windows 7 (64)Official introduction:1. installation and configurationDownload: http://

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