oracle10g

Why is a sequence named hibernate_sequence being created with JPA using Hibernate with the Oracle 10g dialect?

守給你的承諾、 提交于 2019-12-04 20:49:34
问题 All my entities use this type of @Id @Id @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "MYENTITY_SEQ") @SequenceGenerator(name = "MYENTITY_SEQ", sequenceName = "MYENTITY_SEQ") @Column(name = "MYENTITY", nullable = false) private Long id; or @Id @Column(name = "MYENTITY") I find that an Oracle sequence named hibernate_sequence is always created. Why is this so? And how can I avoid this? I am using JPA1 with Hibernate 3 and the Oracle 10g dialect. 回答1: The HIBERNATE_SEQUENCE

Saving data into Clob using Hibernate in Oracle 10g

此生再无相见时 提交于 2019-12-04 19:33:00
I have a table with a java.sql.Clob column in Hibernate The hbm file: <class name="com.model.ClobModel" table="table1"> <id name="id" column="id"> <generator class="assigned"></generator> </id> <property name="clobData" type="clob"> <column name="ClobData"></column> </property> This is the ClobModel : private Integer id; public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } private Clob clobData; public Clob getClobData() { return clobData; } public void setClobData(Clob clobData) { this.clobData = clobData; } When I tried this in hibernate: SessionFactory sf =

ODP.net Connection Pooling: ClientID, Client Identifier never changes from first user who logs in

喜夏-厌秋 提交于 2019-12-04 19:24:30
Scenario : We have an application that is using Oracle 10g and the latest version of ODP.net within an ASP.net application. We are utilizing the .ClientID WriteOnly property on the OracleConnection object to pass in a specific UserID to the database for auditing purposes. When Connection Pooling is disabled, this works perfectly. When it is enabled, the first person who logs in (ex: USER1) updates a record and the MODIFIED_BY is USER1, but when a different user heads into the website after, thus grabbing the pooled connection, the MODIFIED_BY is still USER1 despite passing in USER2 to the

Copying data between Oracle schemas using SQL

戏子无情 提交于 2019-12-04 19:09:42
问题 I'm trying to copy data from one Oracle schema ( CORE_DATA ) into another ( MY_DATA ) using an INSERT INTO (...) SQL statement. What would the SQL statement look like? 回答1: Prefix your table names with the schema names when logged in as a user with access to both: insert into MY_DATA.table_name select * from CORE_DATA.table_name; Assuming that the tables are defined identically in both schemas, the above will copy all records from the table named table_name in CORE_DATA to the table named

Create Schema in oracle 10g express edition

落爺英雄遲暮 提交于 2019-12-04 19:09:31
问题 I have installed oracle 10g express edition and I did not find the option to create schema.. Is there a option to create schema in oracle 10g express edition or else I have to install other oracle 10g..? To create schema which oracle 10g I have to install... what? 回答1: You don't need to explicitly create schema, Oracle automatically creates a schema when you create a user (see CREATE USER documentation). If you really want, you can use CREATE SCHEMA statement and issue it through Oracle

How to select ranges in a range of record in oracle

寵の児 提交于 2019-12-04 19:06:50
If I have a table like this Number Status ------ ------ 1 A 2 A 3 A 4 U 5 U 6 A 7 U 8 U 9 A 10 A What query can I use to group the range into ranges where Status = A? Range Count Status ----- ----- ------ 1-3 3 A 6-6 1 A 9-10 2 A My query is select min(number) || '--' || max(number), count(*), Status from table where Status = 'A' group by Status Range Count Status ----- ----- ------ 1-10 6 A This is a nice way, fancy name " Tabibitosan method " given by Aketi Jyuuzou. SQL> WITH data AS 2 (SELECT num - DENSE_RANK() OVER(PARTITION BY status ORDER BY num) grp, 3 status, 4 num 5 FROM t 6 ) 7

Creating tables with fields from 2 different tables

人走茶凉 提交于 2019-12-04 18:43:23
I want to create a table that stores values from two different tables; From table 1: cust_id (varchar2), invoice_amt (float) From table 2: cust_id (from table 1), payment_date My table should have 3 fields: cust_id, invoice_amt, payment_date I tried the following, which is obviously wrong. create table temp1 as ( select table_1.cust_id, table_1.invoice_amt, table_2.payment_date from table_1@dblink, table_2@dblink) Your valuable suggestions will be of great help. create table temp1 as ( select table_1.cust_id, table_1.invoice_amt, table_2.payment_date from table_1@dblink, table_2@dblink where

Character encoding while reading data using Java-JDBC from Oracle database

空扰寡人 提交于 2019-12-04 17:56:08
We have data stored in oracle 10g db which contains french character set. The requirement is to read the data and generate a output file using Java. I checked the validity of the data in Oracle db via SQL*plus and it looks good. From windows: set NLS_LANG=AMERICAN.AL32UTF8 sqlplus scott/tiger sql> select billing_address from MYTABLE t where ADDRESS_ID=1 ; billing_address ----------------------- MONTRÉAL QUÉ Now when I read the table from Java to generate a output file, the character is all garbled and I see question marks in place of É. Is there any special encoding that I need to set when I

execute immediate over database link

試著忘記壹切 提交于 2019-12-04 17:46:55
Is it possible to execute dynamic PL/SQL on a remote database via a databse link? I'm looking for something like: l_stmt := 'begin null; end;'; execute immediate l_stmt@dblink; The syntax above is obviously wrong, I get PLS-00201: identifier 'L_STMT@DBLINK' must be declared . It is possible to create a procedure remotely and then execute it. Is there a way to execute code without creating a remote procedure? EDIT: I'm trying to work around passing a type over DB link. A remote procedure requires a parameter of type t_id_tab which is defined on the remote DB as CREATE OR REPLACE TYPE T_ID_TAB

SQL Query Select first rank 1 row From Multiple ranks/Group

梦想与她 提交于 2019-12-04 17:24:10
I have following data Table1 id col1 col2 col3 ---------------------------------- 1 abc 01/01/2012 - 1 abc 01/01/2012 A 2 abc 01/01/2012 - 2 abc 01/02/2012 - 3 abc 01/02/2012 - 3 xyz 01/01/2012 - 4 abc 01/02/2012 - 4 xyz 01/01/2012 - 4 xyz 01/02/2012 - following is order to evaluate - if(col1 is false) then evaluate col2 if(col2 is false) then col3: Col1 - xyz has first preference from all values in this column col2 - min date col3 - not '-' or min(col3) I want to return only one row for each id, if col1 fails go to col2, if this fails then go to col3 condition. From above table result should