Default Schema in Oracle Connection URL
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I'd like to set default database schema in
Oracle Connection URL
My sample SQL statement:
select monkey_name from animals.monkey
I need to query database without schema prefix
animals. i.e. when I run this statement
select monkey_name from monkey
it will use
animals schema by default.
What do I need to specify in connection URL above get such effect?
You can't put anything in the connection URL.
In Oracle each user has their own schema (even if doesn't contain any objects) and that is their default schema. Once logged in/connected, they can change their default schema with an
ALTER SESSION SET CURRENT_SCHEMA=animals
So you'd need to do the extra statement after connecting. It is possible to have a logon trigger on the user and/or database that will run this when they log in. I'd personally prefer an explicit statement when an application connects.
Default Schema in Oracle Connection URL, You can't put anything in the connection URL. In Oracle each user has their own schema (even if doesn't contain any objects) and that is their Here is the code to set Default Schema in Commons DBCP .If you do not set the default schema , you will not be able to access test_tab from app_user. package com.datamigration.db; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.util.LinkedList; import java.util.List
If you use C3PO you can make it do it when it checks the connection out.
c3p0.preferredTestQuery=alter session set current_schema=animals c3p0.testConnectionOnCheckout=true
As Java code:
ComboPooledDataSource dataSource = new ComboPooledDataSource(); dataSource.setPreferredTestQuery("alter session set current_schema=animals"); dataSource.setTestConnectionOnCheckout(true);
Downside is this will happen every time the connection is taken out of the pool.
If you are using a JDBC connection yourself you could just do:
Class.forName("oracle.jdbc.driver.OracleDriver"); Connection connection = getConnection("jdbc:oracle:thin:@//server:1521/instance", "username", "password"); connection.createStatement().execute("alter session set current_schema=animals"));
Setting the Default Schema with Oracle JDBC Driver – Yesterday I , If you use C3PO you can make it do it when it checks the connection out. As properties: c3p0.preferredTestQuery=alter session set Don't forget SET SCHEMA 'myschema' which you could use in a separate Statement. SET SCHEMA 'value' is an alias for SET search_path TO value. Only one schema can be specified using this syntax. And since 9.4 and possibly earlier versions on the JDBC driver, there is support for the setSchema(String schemaName) method.
What about the use of synonyms?
create synonym monkey for animals.monkey; select monkey_name from monkey
How to Set Default Schema In Oracle Using Commons , This post describes How to Set Default Schema in Oracle using Commons DBCP . ON users; GRANT CONNECT, CREATE TABLE TO schema_owner; String url; String SET_DEFAULT_SCHEMA="ALTER SESSION SET ALTER SESSION SET CURRENT_SCHEMA = < schema name > In subsequent SQL statements, Oracle Database uses this schema name as the schema qualifier when the qualifier is omitted. In addition, the database uses the temporary tablespace of the specified schema for sorts, joins, and storage of temporary database objects.
You can create a trigger using connection DB user to change the current schema.
create or replace trigger SET_SCHEMA_AFTER_LOGON after logon on database begin execute immediate 'alter session set CURRENT_SCHEMA=animals'; end SET_SCHEMA_AFTER_LOGON;
How to configure Oracle to use a schema name different than the , I'd like to set default database schema in Oracle Connection URL jdbc:oracle:thin:@<server>:<port1521>:<sid>. My sample SQL statement: In case of the Oracle JDBC thin driver, you can find it here. Specifying a Database URL, User Name, and Password. The following signature takes the URL, user name, and password as separate parameters: getConnection(String URL, String user, String password); Where the URL is of the form: jdbc:oracle:<drivertype>:@<database>
Configuring Oracle 11 G Datasource to use a default schema (JBoss , We are trying to configure the JDBC settings to use a schema different than the login user. We attempted to set up a new SQL connection using The connection adapter for the Oracle Database XE Client connects to the default service on the host. On the host, this is set to XE in the listener.ora file. Default service is a new feature of Oracle Database XE. If you use any other Oracle Database client to connect to Oracle Database XE, then you must specify the service name.
[PDF] Specify Schema Name Oracle Connection String, xml to also include the database schema name? If this is possible or not via DB URL or any other configuration? I am using Spring JDBC which Connecting to Oracle Database as User HR. This section shows how to unlock the HR account and connect to Oracle Database as the user HR, who owns the HR sample schema that the examples and tutorials in this document use. To do the tutorials and examples in this document, you must connect to Oracle Database as the user HR. This section contains:
Database schema setup, Connection URL */ String url = "jdbc:sapdb://" + host + "/" + dbname, /* * Connect to the with schema name:"), System.out.println (hello), /* * Change the default. Notification--- These are settings that enable Oracle to email you alert notifications. Alerts are notifications of when a database is in an undesirable state and needs your attention. By default, the Enterprise Manager home page lists all alerts. However, set up is required for email notification.
- This looks like something I can work around it. Create logon trigger with this statement might be my possible solution. Thanks.
- I can now see that, this should be a solution. By having this logon trigger, I don't have to modify my sql. So all generic statements are still portable.
- Do I need to give any privilege to instance user? I am accessing oracle via localhost,
"jdbc:oracle:thin:@localhost:1521:xe"this connection works, but when I try to change xe with created user it fails to connect with error
ORA-12505, TNS:listener does not currently know of SID given in connect descriptor
- It's a good idea. However I find it is not definite, I am not sure if there are any side effects that could break things along the way.
- This is usually the much better choice over altering the session since it shifts the problem from a behavioural aspect to a structural, which is much more robust.
- Although this does work for most cases, in many corporate environments there will exist multiple application schemas in a single database. there will be a namespace collision if the original table names aren't created using prefixes.
e.g. MY_APP_PREFIX_USER(usually more succint) many people find this ugly and would prefer the concept of a default schema over synonyms.
- coderathet, that would be true if you used public synonyms. It is always advisable to use private synonyms as far as possible, which avoids such name collisions.