ddl

I want to run unit tests by generating all tables in HSQLDB, present in my oracle database. For that I want to export all DDL create table statements from oracle tables. I tried export database, but along with create table sql I am getting lot other SQLs like, " PARTITION BY RANGE ("CREATION_DATE") " etc. How do I export all oracle tables(schema) to HSQLDB? is there any better way? You can use the DBMS_METADATA.GET_DDL() function to get the table definition, and modify what is included with the SET_TRANSFORM_PARAM() options, specifically in this case the PARTITIONING parameter. There are lots

I want to automatically insert data into my MySQL tables. Therefore I try to use the JPA property "javax.persistence.sql-load-script-source" in my persistence.xml : <?xml version="1.0" encoding="UTF-8"?> <persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"> <persistence-unit name="my-PU" transaction-type="JTA"> <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider> <jta-data-source>jdbc

i want to generate scripts for database objects, e.g. tables views stored procedures functions Since: SQL Server Management Objects (SMO) SQL Distributed Management Objects (SQL-DMO) (depricated) are not installed on a fresh install of: Windows XP Windows Vista Windows 7 nor are they redistributable, they are not an option ( it will run on a customer's machine ). ( EDIT : It looks as if SMO is actually redistributable as of today.) Is there any source code that converts SELECTs from system tables into associated scripts? i'll start us off with the pseudo-code that scripts a stored procedures,

Overview of an Active-Active Configuration Oracle GoldenGate supports an active-active bi-directional configuration, where there are two systems with identical sets of data that can be changed by application users on either system. Oracle GoldenGate replicates transactional data changes from each database to the other to keep both sets of data current. In a bi-directional configuration, there is a complete set of active Oracle GoldenGate processes on each system. Data captured by an Extract process on one system is propagated to the other system, where it is applied by a local Replicat process

一、DML DML（data manipulation language）数据操纵语言： 　　　　就是我们最经常用到的 SELECT、UPDATE、INSERT、DELETE。 主要用来对数据库的数据进行一些操作。 SELECT 列名称 FROM 表名称 UPDATE 表名称 SET 列名称 = 新值 WHERE 列名称 = 某值 INSERT INTO table_name (列1, 列2,...) VALUES (值1, 值2,....) DELETE FROM 表名称 WHERE 列名称 = 值 1.SELECT - retrieve data from the a database 查询 2.INSERT - insert data into a table添加 3.UPDATE - updates existing data within a table 更新 4.DELETE - deletes all records from a table, the space for the records remain 删除 5.CALL - call a PL/SQL or Java subprogram 6.EXPLAIN PLAN - explain access path to data Oracle RDBMS执行每一条SQL语句，都必须经过Oracle优化器的评估

创建表: 如下的格式 CREATE [TEMPORARY] [EXTERNAL] TABLE [IF NOT EXISTS] [db_name.] table_name LIKE existing_table_or_view_name [LOCATION hdfs_path]; 拷贝表结构，不拷贝表数据 CREATE TABLE ruozedata_emp2 LIKE ruozedata_emp; Create Table As Select (CTAS) #CTAS表示Create Table As Select create table ruozedata_emp3 as select empno,ename,deptno from ruozedata_emp; 离线作业：天粒度，今天统计的是昨天的，统计结果写到一个tmp表里面 ALTER TABLE 老表 RENAME TO 新表; ALTER TABLE ruozedata_emp3 rename to ruozedata_emp3_bak; Drop Table 删表跑路 DROP TABLE table_name ruozedata_emp3_bak; 表和数据都会删除 Truncate Table 删表的数据，但是表还在 Truncate Table table_name； Drop Table和Truncate

ORA-1562 and ORA-1650 Unable to Extend Rollback Segment (Doc ID 1066542.6) APPLIES TO: Oracle Database - Enterprise Edition - Version 8.0.3.0 and later Oracle Solaris on SPARC (32-bit) SYMPTOMS You are working with the database that is using Rollback Segments (ie not using automatic undo) and you encounter ora-1562. 您正在使用回滚段的数据库（即未使用自动撤消），并且遇到了ora-1562 Error: ORA 01562 Text: "failed to extend rollback segment number %s" ------------------------------------------------------------------------ Cause: Failure occurred when trying to extend rollback segment Action: This is normally followed by