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175bceb5e8
* Coin selection for SQL Server/Azure * Transaction isolation level change for updateInfoDB in PersistentNetworkMapCache from "repeatableRead" to "readCommitted" * Configuration option to prefix all Hibernate generated SQL with a schema name via a configuration property `database.schema` * Fix negative value in SELECT TOP query (fix for Oracle db)
61 lines
2.3 KiB
ReStructuredText
61 lines
2.3 KiB
ReStructuredText
Node database
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=============
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Default in-memory database
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--------------------------
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By default nodes store their data in an H2 database.
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You can connect directly to a running node's database to see its stored states, transactions and attachments as
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follows:
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* Download the `h2 platform-independent zip <http://www.h2database.com/html/download.html>`_, unzip the zip, and
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navigate in a terminal window to the unzipped folder
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* Change directories to the bin folder:
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``cd h2/bin``
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* Run the following command to open the h2 web console in a web browser tab:
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* Unix: ``sh h2.sh``
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* Windows: ``h2.bat``
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* Find the node's JDBC connection string. Each node outputs its connection string in the terminal
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window as it starts up. In a terminal window where a node is running, look for the following string:
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``Database connection URL is : jdbc:h2:tcp://10.18.0.150:56736/node``
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* Paste this string into the JDBC URL field and click ``Connect``, using the default username and password.
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You will be presented with a web interface that shows the contents of your node's storage and vault, and provides an
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interface for you to query them using SQL.
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Standalone database
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-------------------
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To run a node against a remote database modify node JDBC connection properties in `dataSourceProperties` entry
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and Hibernate properties in `database` entry - see `:ref:`dataSourceProperties`.
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SQL Azure and SQL Server
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````````````````````````
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Corda supports SQL Server 2017 adn SQL Azure.
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The minimum transaction isolation level ``database.transactionIsolationLevel`` is 'readCommitted'.
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The property ``database.schema`` is optional.
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Corda ships with Microsoft JDBC Driver 6.2 for SQLServer out-of-the-box.
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Example node configuration for SQL Azure:
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.. sourcecode:: none
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dataSourceProperties {
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dataSourceClassName = "com.microsoft.sqlserver.jdbc.SQLServerDataSource"
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dataSourceProperties.dataSource.url = "jdbc:sqlserver://[DATABASE_SERVER].database.windows.net:1433;databaseName=[DATABASE];
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encrypt=true;trustServerCertificate=false;hostNameInCertificate=*.database.windows.net;loginTimeout=30"
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dataSourceProperties.dataSource.user = [USER]
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dataSourceProperties.dataSource.password = [PASSWORD]
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}
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database {
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transactionIsolationLevel = "readCommitted"
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schema = [SCHEMA]
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}
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