Oracle Editioning Views and JPA or Hibernate -


my application uses 7 , oracle 11g. i'm looking forward achieve 0 downtime during deployments. deployment involves ear deployments , ddl/dml changes oracle db. question focuses on no downtime oracle db during ddl/dml upgrade , supporting new data definition in java ee application.

one of team here has achieved using oracle editioning views (edition based revision) layer each table. application uses jpa , hibernate. i've conducted small poc create entities editioning views; seems jpa or hibernate not support them.

is there information available using editioning views jpa or hibernate?

i suggest @ liquibase allow application keep own database uptodate.

if use spring it's easy, need spring bean :

@bean public springliquibase liquibase() {     log.debug("configuring liquibase");     springliquibase liquibase = new springliquibase();     liquibase.setdatasource(datasource());     liquibase.setchangelog("classpath:config/liquibase/master.xml");     liquibase.setcontexts("development, production");     return liquibase; }

then have change log:

databasechangelog   xmlns="http://www.liquibase.org/xml/ns/dbchangelog"   xmlns:xsi="http://www.w3.org/2001/xmlschema-instance"   xsi:schemalocation="http://www.liquibase.org/xml/ns/dbchangelog          http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.1.xsd">      <changeset id="1" author="bob">         <createtable tablename="department">             <column name="id" type="int">                 <constraints primarykey="true" nullable="false"/>             </column>             <column name="name" type="varchar(50)">                 <constraints nullable="false"/>             </column>             <column name="active" type="boolean" defaultvalueboolean="true"/>         </createtable>     </changeset>  </databasechangelog>

each time application starts check if there changes need applying.


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