I'm trying to integrate Hibernate into my Netbeans project to connect to Microsoft SQL Server. I've run the Hibernate Configuration file wizard (and set up a new database connection). I've set the dialect to SqlServerDialect. I initially set up the connection with the db_owner schema. I've run test queries on the connection and they all return the correct information.
However, when I try to run either the Hibernate Mapping wizard or the Hibernate Reverse Engineering wizard, there are no available tables to select.
I'm using the JDBC from Microsoft (version 4). There are other similar questions already posted, but no answers that have been provided work.
It turns out I selected the wrong default schema. I selected db_owner and it should have been dbo. When I checked the connection under the services tab and expanded the default schema, it showed no tables. Apparently the SQL executor uses other schemas besides the default to find results.
Related
What is the difference between spring.jpa.hibernate.hbm2ddl and spring.jpa.hibernate.ddl?
I have found in this question: What are the possible values of spring.datasource.initialization-mode? that OP is using both in properties, however it seems like the origin of hbm2ddl is hibernate directly not Spring Data Jpa.
Nevertheless, reading the answer from another OP, it looks like pass-through only.
However in our commercial project with mariadb, when we do not close our spring boot application gracefully with spring.jpa.hibernate.hbm2ddl.auto=create, when the application is run again, it deletes old data and creates everything from scratch. On the other hand with spring.jpa.hibernate.ddl.auto=create every second run (after no graceful application shutdown) causes key constraint exceptions (DB is not being dropper before creation)
From this Link
By default, JPA databases are automatically created only if you use an embedded database (H2, HSQL, or Derby).
You can explicitly configure JPA settings by using spring.jpa.* properties. For example, to create and drop tables you can add the following line to your application.properties:
spring.jpa.hibernate.ddl-auto=create-drop
Hibernate’s own internal property name for this (if you happen to remember it better) is hibernate.hbm2ddl.auto.
From this Link
spring.jpa.hibernate.ddl-auto This is actually a shortcut for the "hibernate.hbm2ddl.auto" property.
Defaults to "create-drop" when using an embedded database and no schema manager was detected. Otherwise, defaults to "none".
From this Link
Spring Boot can automatically create the schema (DDL scripts) of your DataSource and initialize it (DML scripts).
It loads SQL from the standard root classpath locations: schema.sql and data.sql, respectively.
In addition, Spring Boot processes the schema-${platform}.sql and data-${platform}.sql files (if present), where platform is the value of spring.datasource.platform.
This allows you to switch to database-specific scripts if necessary. For example, you might choose to set it to the vendor name of the database (hsqldb, h2, oracle, mysql, postgresql, and so on).
I deployed a simple Jpdl (JBPM4.4) and when i check the jbpm database. I found entries in JBPM4_DEPLOYMENT, JBPM4_DEPLOYPROP tables but not in anyothe table.
I want to understand when the entries goes into the other tables of jbpm database.
You will find the database scripts for a lot of the supported
databases in the DB subproject. The database scripts for PostgreSQL
are found in the folder '${JBPM_SDK_HOME}/jbpm-db/build/mysql/scripts.
The creation script is called 'postgresql.create.sql'. Using
DBVisualizer, you can load this script by switching to the 'SQL
Commander' tab and then selecting 'File->Load...'. In the following
dialog, navigate to the creation script file.
Resource Link: https://docs.jboss.org/jbpm/v3/userguide/thejbpmdatabase.html
You will also get mysql data import related info step by step in this link.
as the title says, I have an application (Spring Boot) which must execute some queries on specified objects on a SQL Server database. Such database having a single catalog and multiple schemas, which must be selected based on a previous query and some command line parameters.
I cannot seem to implement a strategy which involves Hibernate multi-tenancy, as most of the tutorials and answers on this site deal with schema names coming from a web request or an external parameter, while I need a database connection before creating the main multi-tenant EntityManager. So, I switched to a custom DataSource which tries to change the connection's default schema (using ALTER USER... WITH DEFAULT_SCHEMA = ...). But this also fails because the logged-in user does not have permission to alter his own default schema.
So I'm at a loss of what to do. Any suggestions?
Just create an EntityManager(Factory) per schema and put them in a map to choose from.
If you don't know the schemas before hand you can create EntityManager(Factory)s as soon as you learn about a schema.
that you can configure an EntityManagerFactory programatically.
I am building a spring MVC web application. I am using Hibernate as my ORM. Whenever I restart my tomcat 7 server, it automatically deletes the table created previously. How to prevent this?
Search for hbm2ddl text somewhere in your configuration, close to Hibernate configuration properties. It should be set to update or none, apparently you have create-drop.
See also
Hibernate hbm2ddl.auto possible values and what they do?
In my J2EE 5 application I have a JDBC Realm based security with Form method. Encrypt method is MD5 as default.
The database is PostgreSQL 8.4 installed locally (or 8.3 available via lan).
My app used to work finely on GlassFish v2.1 server with PostgreSQL 8.3, but now I need to deploy it on GlassFish v3.
I am absolutely sure I have done all the same config on GFv3 like creating Connection Pool (which pings with no problem), JDBC Resource and JDBC Realm.
But on GFv3 I get login exception with "invaliduserreason" while the database schema is just created from the working database script.
I have checked the data and entered login/password thousand times and it seems that data is all right.
So where can I find the reason of unworking security? Please, advice.
NetBeans 6.8
Thanks.
I had the same issue here.
I resolved setting the security log to finest.
I saw that jaas was querying the db in lowercase even though I used a camel notation in naming my fields in postgresql table.
The only solution I found was to name all my table and fields in lowercase in Postgresql server as well.
You might want to increase the logging for the security system. Go to Logger Settings -> Log Warnings and set logger name 'javax.enterprise.system.core.security' to trace. Try again and check the logs.
Try changing database tablenames to UPPERCASE. I had the exactly same problem as you have and changing tablenames to uppercase solved the problem for me.
Setting Digest Algorithm to "none" worked for me. I am using Glassfish 3.1 with Derby. In realm config i have name of tables in lowercase and userid and groupid are columns in the same table, so these things do not cause problems on Derby.
Here is a nice article about jdbc security realm in glassfish and how to configure it: http://jugojava.blogspot.com/2011/02/jdbc-security-realm-with-glassfish-and.html
try adding database name to the property Url in your connection pool.. the sqlexception hidden here states that database name is not specified.. worked for me