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【Oracle】-【权限-ORA-04043】- ORA-04043: object SYS.V_$DATABASE does not exist

用非dba账号(但赋予了DBA角色)登录一个新的10g数据库想看下版本号， SQL> desc v$instance; ERROR: ORA-04043: object "SYS"."...ORA-04043: object string does not exist Cause: An object name was specified that was not recognized...Action: Check the spelling of the named object and rerun the code....SQL> SELECT owner, object_type FROM dba_objects WHERE object_name = 'V$INSTANCE'; OWNER ...补充： V$FIXED_TABLE中的内容，即使数据库没有open(mount或nomount)，也是可以查看的，但普通表查看则可能会提示：ORA-01219: database not open: queries

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解决 Cannot determine embedded database driver class for database type NONE

先看错误： Description: Cannot determine embedded database driver class for database type NONE Action:...If you want an embedded database please put a supported one on the classpath....If you have database settings to be loaded from a particular profile you may need to active it (no profiles

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The Worlds of Database Systems

Suppose that you want to build an university database....Update: enroll Mary in the “Database” course Protect from unauthorized access Students cannot change...Protect from system crashes When some system components fail (hard drive, network, etc.), database can...Efficient database operations Search for students with 5 highest GPAs Alternative to Using a DBMS...Queries in DBMS Sample queries on university database: What is the name of the student with student

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YashanDB BUILD DATABASE语句

满足CREATE DATABASE语句的所有约束条件。...BUILD（BUILD DATABASE TO STANDBY指定单个standby_name或BUILD DATABASE TO REMOTE指定单个IP）：适用于单机、共享集群部署由主库向多备库同时发起...BUILD（BUILD DATABASE TO STANDBY或BUILD DATABASE TO REMOTE）：适用于单机部署由备库向多备库同时发起BUILD（BUILD DATABASE TO REMOTE...）：适用于单机部署增量BUILD：用于异常备库的快速修复由主库向存在gap的备库发起BUILD（BUILD DATABASE INCREMENTAL TO STANDBY或BUILD DATABASE...#语句定义build database::=代码syntax::= BUILD DATABASE [((INCREMENTAL TO ((STANDBY standby_name) | (REMOTE

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YashanDB ALTER DATABASE语句

#语句定义代码syntax::= ALTER DATABASE (startup_clauses|database_file_clauses|logfile_clauses|standby_database_clauses...示例ALTER DATABASE MOUNT; ALTER DATABASE OPEN;ALTER DATABASE OPEN UPGRADE;Copied!...示例ALTER DATABASE SET STANDBY DATABASE TO MAXIMIZE PERFORMANCE; ALTER DATABASE SET STANDBY DATABASE TO...MAXIMIZE PROTECTION; ALTER DATABASE SET STANDBY DATABASE TO MAXIMIZE AVAILABILITY; ALTER DATABASE SET...ARC';RECOVER DATABASE;ALTER DATABASE OPEN;Copied!

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Database Design Guidelines

Database Design Guidelines Principles Support popular databases Name Style Table Name Style: Pascal...For example: 2001/01/15, On the database server, timezone is +8. 2001/01/15, On the application server...Database-specific constraints Avoid to use reversed words for name of objects of databases Tips: please...read the reversed words from database you will use Avoid to use system prefix in your object names...Check length limitation of object names of databases Tables Entity Tables Like departments, employee

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Database Design Guidelines

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15个NoSql数据库

HBase – Hadoop Database，是一个高可靠性、高性能、面向列、可伸缩的分布式存储系统，利用HBase技术可在廉价PC Server上搭建起大规模结构化存储集群。　　...特性主要特点：访问速度快省硬盘空间官方网站 http://www.oracle.com/us/products/database/overview/index.html?...官方网站 http://www.db4o.com/china/ 13、Versant 介绍 Versant Object Database (V/OD) 提供强大的数据管理，面向 C++, Java or...Versant对象数据库是一个对象数据库管理系统(ODBMS：Object Database Management System)。...特性一、强有力的优势 Versant Object Database8.0，适用于应用环境中包含复杂对象模型的数据库，其设计目标是能够处理这些应用经常需要的导航式访问，无缝的数据分发，和企业级的规模。

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Database代做编程辅导：CS5200 Database Management

p=29692IntroductionDatabase Management的大，根据现有代码片段以及架构图，实现一个完整的Database System，不过相对的比较灵活。...specializations, e.g., several types of vehicles, several types of buildings, several types of jobs, etc.Object...should be done through data access objects that provide an API to access the database....between user interface and controller, or through a network, should be encapsulated in a data transfer object...These are stored in the local database.

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15个nosql数据库

HBase – Hadoop Database，是一个高可靠性、高性能、面向列、可伸缩的分布式存储系统，利用HBase技术可在廉价PC Server上搭建起大规模结构化存储集群。　　...特性主要特点：访问速度快省硬盘空间官方网站 http://www.oracle.com/us/products/database/overview/index.html?...图：DRS模型官方网站 http://www.db4o.com/china/ 13、Versant 介绍 Versant Object Database (V/OD) 提供强大的数据管理，面向...Versant对象数据库是一个对象数据库管理系统(ODBMS：Object Database Management System)。...特性一、强有力的优势 Versant Object Database8.0，适用于应用环境中包含复杂对象模型的数据库，其设计目标是能够处理这些应用经常需要的导航式访问，无缝的数据分发，和企业级的规模

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mysql database backu

mysql database backup use python scripts #!...,MYSQL_PASS,MYSQL_HOST),stdout=subprocess.PIPE,shell=True) DATABASE_NAME=database_cmd.stdout.read...().split() for DATABASE in DATABASE_NAME: MYSQLDUMP_FILENAME="/mysql_backup/%s%s.sql"%(CUR_TIME...,DATABASE) subprocess.call("mysqldump -u%s -p%s -h%s %s>%s" %(MYSQL_USER,MYSQL_PASS,MYSQL_HOST...,DATABASE,MYSQLDUMP_FILENAME),shell=True) if os.path.isfile('${DEL_TIME}${DATABASE}.sql'):

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no mycat database selected

使用mycat做读写分离，数据库的权限配置都对，但是一访问程序就报错：no mycat database selected；从报错信息上看是因为没有选中数据库导致的，如果不使用mycat就没有这个错，经排查发现是因...SchemaUtil.detectDefaultDb(sql, type); if (db == null) { writeErrMessage(ErrorCode.ERR_BAD_LOGICDB, "No MyCAT Database...getSchemas().get(db); if (schema == null) { writeErrMessage(ErrorCode.ERR_BAD_LOGICDB, "Unknown MyCAT Database

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SQL（Database Modifications）

A modification command does not return a result (as a query does), but changes the database in some way...在一次操作中完成创建表和插入数据的操作） Create a Local or Global Temporary Table（创建本地或全局临时表） Set the select into/bulkcopy Database

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Active Database Duplication

Note：For active database duplication, the source database must use a server parameter file（SPFILE）....有以下两种方式： Active Database Duplication Using Image Copies Active Database Duplication Using Backup Sets...Set Creation During Active Database Duplication About Encrypting Backup Sets During Active Database...1、Compressing Backup Sets During Active Database Duplication DUPLICATE TARGET DATABASE TO dup_db FROM...Active Database Duplication DUPLICATE TARGET DATABASE TO dup_db FROM ACTIVE DATABASE PASSWORD FILE SECTION

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解决 Cannot determine embedded database driver class for database type NONE

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java object toarray,Object[] toArray()

Object[] toArray() 描述 (Description) java.util.LinkedList.toArray()方法以适当的顺序(从第一个元素到最后一个元素)返回包含此列表中所有元素的数组...声明 (Declaration) 以下是java.util.LinkedList.toArray()方法的声明public Object[] toArray() 参数 (Parameters) NA 返回值...print the list System.out.println(“LinkedList:” + list); // create an array and copy the list to it Object

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SharePoint Content Database简介

Sites Table that holds information about all the site collections for this content database.

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聊聊claudb的Database

序本文主要研究一下claudb的Database Database claudb-1.7.1/src/main/java/com/github/tonivade/claudb/data/Database.java...public interface Database { int size(); boolean isEmpty(); boolean containsKey(DatabaseKey...entrySet() .filter(entry -> entry.get2().isExpired(now)) .map(Tuple2::get1); } } Database...main/java/com/github/tonivade/claudb/data/OnHeapDatabase.java public class OnHeapDatabase implements Database...entrySet() { return ImmutableSet.from(cache.entrySet()).map(Tuple::from); } } OnHeapDatabase实现了Database

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YashanDB BACKUP DATABASE函数

通用描述BACKUP DATABASE用于执行对当前数据库的备份，即将数据库文件拷贝一个副本，以备份集的形式持久化。备份包括全量备份和增量备份。...只能在数据库状态为OPEN时备份数据库，且归档模式必须为开启状态（使用ALTER DATABASE语句调整归档模式）。关于备份恢复的详细操作描述请参考备份恢复。...示例（单机、共享集群部署）BACKUP DATABASE INCREMENTAL LEVEL 1 CUMULATIVE COMPRESSION;BACKUP DATABASE INCREMENTAL LEVEL...示例（单机、共享集群部署）BACKUP DATABASE INCREMENTAL LEVEL 0 ENCRYPTION IDENTIFIED BY 12345;--增量备份必须都加密BACKUP DATABASE...示例（单机、共享集群部署）BACKUP DATABASE DELETE BACKUPSET TAG 'backup';BACKUP DATABASE DELETE BACKUPSET PATH '/data

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spring 解决 Cannot determine embedded database driver class for database type NONE

Description: Cannot determine embedded database driver class for database type NONE Action: If you...want an embedded database please put a supported one on the classpath....If you have database settings to be loaded from a particular profile you may need to active it (no profiles

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【Oracle】-【权限-ORA-04043】- ORA-04043: object SYS.V_$DATABASE does not exist

解决 Cannot determine embedded database driver class for database type NONE

The Worlds of Database Systems

YashanDB BUILD DATABASE语句

YashanDB ALTER DATABASE语句

Database Design Guidelines

Database Design Guidelines

15个NoSql数据库

Database代做编程辅导：CS5200 Database Management

15个nosql数据库

mysql database backu

no mycat database selected

SQL（Database Modifications）

Active Database Duplication

解决 Cannot determine embedded database driver class for database type NONE

java object toarray,Object[] toArray()

SharePoint Content Database简介

聊聊claudb的Database

YashanDB BACKUP DATABASE函数

spring 解决 Cannot determine embedded database driver class for database type NONE

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