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如果這是重複的，請原諒我。我已經搜索和搜索。但是過去幾天裏，我有一些東西在困擾着我。我已經研究並沒有找到解決我的問題的解決方案。我正在研究一個需要訪問多個數據庫的應用程序。如果我只做一個數據庫並將其注入到具有數據源對象的代碼中，那麼對於我使用的任何數據庫來說它都可以。但是如果我嘗試添加另一個數據源，那就是問題何時開始。我曾嘗試將配置添加到datasource.groovy，並且我嘗試了「硬編碼」連接。使用grails連接到多個oracle數據源的問題
硬編碼方法
正如你所看到的，我用下面的各種方法試圖和所有給我的錯誤以下。 ojdbc6.jar加載正確，因爲我通過故意拼寫錯誤的驅動程序類名進行了驗證，並找到了類未找到的錯誤。
import java.sql.*
def index(){
...
def db = [url:'jdbc:oracle:oci8:@someotherdatabase.whatever.com', user:'other_user', password:'other_pw', driver:'oracle.jdbc.OracleDriver']
def sql = Sql.newInstance(db.url, db.user, db.password, db.driver)
// Sql.loadDriver("oracle.jdbc.driver.OracleDriver")
// Sql.loadDriver("oracle.jdbc.OracleDriver")
// def sql2 = Sql.newInstance('jdbc:oracle:oci8:@someotherdatabase.whatever.com','other_user','other_pw','oracle.jdbc.driver.OracleDriver')
// def sql = Sql.newInstance("jdbc:oracle:oci8:@someotherdatabase.whatever.com", "other_user", "other_pw", "oracle.jdbc.OracleDriver")
// DriverManager.registerDriver(new oracle.jdbc.OracleDriver())
// Class.forName("oracle.jdbc.driver.OracleDriver")
// Connection conn = DriverManager.getConnection('jdbc:oracle:oci8:@someotherdatabase.whatever.com','other_user','other_pw')
// Sql sql = new Sql(conn)
...
}
錯誤：
Error |
2014-10-28 11:38:06,766 [http-bio-8080-exec-1] ERROR errors.GrailsExceptionResolver - SQLException occurred when processing request: [GET] /ApplicationPortal/home
No suitable driver found for jdbc:oracle:oci8:@someotherdatabase.whatever.com. Stacktrace follows:
Message: No suitable driver found for jdbc:oracle:oci8:@someotherdatabase.whatever.com
Line | Method
->> 602 | getConnection in java.sql.DriverManager
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 185 | getConnection in ''
| 192 | index . . . . in com.myapp.HomeController$$EOu0LeDV
| 200 | doFilter in grails.plugin.cache.web.filter.PageFragmentCachingFilter
| 63 | doFilter . . in grails.plugin.cache.web.filter.AbstractFilter
| 895 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker
| 918 | run . . . . . in ''
^ 662 | run in java.lang.Thread
DataSource.groovy的配置方法
我已經在嘗試DataSource.groovy中不同的配置。目前這看起來是這樣的：
dataSource {
dialect = org.hibernate.dialect.Oracle10gDialect
driverClassName = 'oracle.jdbc.driver.OracleDriver'
pooled = true
properties {
maxActive = -1
minEvictableIdleTimeMillis=1800000
timeBetweenEvictionRunsMillis=1800000
numTestsPerEvictionRun=3
testOnBorrow=true
testWhileIdle=true
testOnReturn=true
validationQuery="SELECT 1 from dual"
}
}
hibernate {
cache.use_second_level_cache = true
cache.use_query_cache = false
cache.region.factory_class = 'net.sf.ehcache.hibernate.EhCacheRegionFactory'
showsql = true
}
environments {
development {
dataSource {
url = "jdbc:oracle:oci:@database.whatever.com"
username="data_user"
password = "some_pw"
}
dataSource_task {
url = "jdbc:oracle:oci8:@someotherdatabase.whatever.com"
username="other_user"
password = "other_pw"
}
}
}
而且我收到錯誤。我不知道它爲什麼試圖使用h2數據庫。我需要它連接到oracle數據庫。
Error |
2014-10-29 13:30:53,500 [localhost-startStop-1] ERROR pool.ConnectionPool - Unable to create initial connections of pool.
Message: Driver:[email protected] returned null for URL:jdbc:oracle:oci8:@someotherdatabase.whatever.com
Line | Method
->> 303 | innerRun in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 138 | run in java.util.concurrent.FutureTask
| 895 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker
| 918 | run in ''
^ 662 | run . . in java.lang.Thread
Error |
2014-10-29 13:30:53,547 [localhost-startStop-1] ERROR pool.ConnectionPool - Unable to create initial connections of pool.
Message: Driver:[email protected] returned null for URL:jdbc:oracle:oci8:@someotherdatabase.whatever.com
Line | Method
->> 303 | innerRun in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 138 | run in java.util.concurrent.FutureTask
| 895 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker
| 918 | run in ''
^ 662 | run . . in java.lang.Thread
Error |
2014-10-29 13:30:53,621 [localhost-startStop-1] ERROR pool.ConnectionPool - Unable to create initial connections of pool.
Message: Driver:[email protected] returned null for URL:jdbc:oracle:oci8:@someotherdatabase.whatever.com
Line | Method
->> 303 | innerRun in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 138 | run in java.util.concurrent.FutureTask
| 895 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker
| 918 | run in ''
^ 662 | run . . in java.lang.Thread
Error |
2014-10-29 13:30:53,634 [localhost-startStop-1] ERROR context.GrailsContextLoader - Error initializing the application: Error creating bean with name 'transactionManager_task': Cannot resolve reference to bean 'sessionFactory_task' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory_task': Cannot resolve reference to bean 'hibernateProperties_task' while setting bean property 'hibernateProperties'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'hibernateProperties_task': Cannot resolve reference to bean 'dialectDetector_task' while setting bean property 'properties' with key [hibernate.dialect]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dialectDetector_task': Invocation of init method failed; nested exception is org.springframework.jdbc.support.MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is java.sql.SQLException: Driver:[email protected] returned null for URL:jdbc:oracle:oci8:@someotherdatabase.whatever.com
Message: Error creating bean with name 'transactionManager_task': Cannot resolve reference to bean 'sessionFactory_task' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory_task': Cannot resolve reference to bean 'hibernateProperties_task' while setting bean property 'hibernateProperties'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'hibernateProperties_task': Cannot resolve reference to bean 'dialectDetector_task' while setting bean property 'properties' with key [hibernate.dialect]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dialectDetector_task': Invocation of init method failed; nested exception is org.springframework.jdbc.support.MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is java.sql.SQLException: Driver:[email protected] returned null for URL:jdbc:oracle:oci8:@someotherdatabase.whatever.com
Line | Method
->> 303 | innerRun in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 138 | run in java.util.concurrent.FutureTask
| 895 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker
| 918 | run in ''
^ 662 | run . . in java.lang.Thread
Caused by BeanCreationException: Error creating bean with name 'sessionFactory_task': Cannot resolve reference to bean 'hibernateProperties_task' while setting bean property 'hibernateProperties'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'hibernateProperties_task': Cannot resolve reference to bean 'dialectDetector_task' while setting bean property 'properties' with key [hibernate.dialect]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dialectDetector_task': Invocation of init method failed; nested exception is org.springframework.jdbc.support.MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is java.sql.SQLException: Driver:[email protected] returned null for URL:jdbc:oracle:oci8:@someotherdatabase.whatever.com
->> 303 | innerRun in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 138 | run in java.util.concurrent.FutureTask
| 895 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker
| 918 | run in ''
^ 662 | run . . in java.lang.Thread
Caused by BeanCreationException: Error creating bean with name 'hibernateProperties_task': Cannot resolve reference to bean 'dialectDetector_task' while setting bean property 'properties' with key [hibernate.dialect]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dialectDetector_task': Invocation of init method failed; nested exception is org.springframework.jdbc.support.MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is java.sql.SQLException: Driver:[email protected] returned null for URL:jdbc:oracle:oci8:@someotherdatabase.whatever.com
->> 303 | innerRun in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 138 | run in java.util.concurrent.FutureTask
| 895 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker
| 918 | run in ''
^ 662 | run . . in java.lang.Thread
Caused by BeanCreationException: Error creating bean with name 'dialectDetector_task': Invocation of init method failed; nested exception is org.springframework.jdbc.support.MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is java.sql.SQLException: Driver:[email protected] returned null for URL:jdbc:oracle:oci8:@someotherdatabase.whatever.com
->> 303 | innerRun in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 138 | run in java.util.concurrent.FutureTask
| 895 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker
| 918 | run in ''
^ 662 | run . . in java.lang.Thread
Caused by MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is java.sql.SQLException: Driver:[email protected] returned null for URL:jdbc:oracle:oci8:@someotherdatabase.whatever.com
->> 303 | innerRun in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 138 | run in java.util.concurrent.FutureTask
| 895 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker
| 918 | run in ''
^ 662 | run . . in java.lang.Thread
Caused by SQLException: Driver:[email protected] returned null for URL:jdbc:oracle:oci8:@someotherdatabase.whatever.com
->> 303 | innerRun in java.util.concurrent.FutureTask$Sync
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 138 | run in java.util.concurrent.FutureTask
| 895 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker
| 918 | run in ''
^ 662 | run . . in java.lang.Thread
Error |
Forked Grails VM exited with error
設置： Grails的2.3.7 的Oracle 11g
編輯： 與數據源方法的問題是不是與我有多少數據源使用。我必須處理這個名字。如果我只用一個datasouce作爲datasource_other，它會拋出錯誤。但數據源的作品。