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Fehler

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Die Ursache für diesen Fehler war:
org.apache.ojb.broker.PersistenceBrokerException: Used ConnectionManager instance could not obtain a connection     
org.apache.ojb.broker.accesslayer.StatementManager.getPreparedStatement(StatementManager.java: 624)     
org.apache.ojb.broker.accesslayer.JdbcAccessImpl.executeQuery(JdbcAccessImpl.java: 293)     
org.apache.ojb.broker.accesslayer.RsQueryObject.performQuery(RsQueryObject.java: 93)     
org.apache.ojb.broker.accesslayer.RsIterator.(RsIterator.java: 194)     
org.apache.ojb.broker.core.RsIteratorFactoryImpl.createRsIterator(RsIteratorFactoryImpl.java: 63)     
org.apache.ojb.broker.core.PersistenceBrokerImpl.getRsIteratorFromQuery(PersistenceBrokerImpl.java: 2242)     
org.apache.ojb.broker.core.PersistenceBrokerImpl.getIteratorFromQuery(PersistenceBrokerImpl.java: 2205)     
org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery(QueryReferenceBroker.java: 135)     
org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery(QueryReferenceBroker.java: 281)     
org.apache.ojb.broker.core.PersistenceBrokerImpl.getCollectionByQuery(PersistenceBrokerImpl.java: 1602)     
kos.generator.broker.PB.getCollectionByQuery(PB.java: 50)     
org.apache.ojb.broker.core.DelegatingPersistenceBroker.getCollectionByQuery(DelegatingPersistenceBroker.java: 405)     
org.apache.ojb.broker.core.DelegatingPersistenceBroker.getCollectionByQuery(DelegatingPersistenceBroker.java: 405)     
kos.wnetz.om.PropertySetDefinition.loadPropertySetInstances(PropertySetDefinition.java: 381)     
kos.wnetz.om.PropertySetDefinition.getInstances(PropertySetDefinition.java: 55)     
kos.wnetz.om.PropertySetDefinition.getPropertySetClientInstance(PropertySetDefinition.java: 162)     
kos.wnetz.om.PropertySetDefinition.getPropertySetInstance(PropertySetDefinition.java: 180)     
kos.wnetz.system.PropertySet.loadAttributeValues(PropertySet.java: 88)     
kos.wnetz.system.PropertySet.getInstanceForContext(PropertySet.java: 76)     
kos.wnetz.system.PropertySet.getInstance(PropertySet.java: 35)     
... 122 weitere Elemente...
Ursache dafür war: 
org.apache.ojb.broker.accesslayer.LookupException: Error getting Connection from DriverManager with url (jdbc:mysql://localhost:3306/685?autoReconnectForPools=true&zeroDateTimeBehavior=convertToNull&jdbcCompliantTruncation=false&useServerPrepStmts=false&allowPublicKeyRetrieval=true&useSSL=false&characterEncoding=latin1) and driver (com.mysql.jdbc.Driver)     
org.apache.ojb.broker.accesslayer.ConnectionFactoryAbstractImpl.newConnectionFromDriverManager(ConnectionFactoryAbstractImpl.java: 290)     
org.apache.ojb.broker.accesslayer.ConnectionFactoryNotPooledImpl.checkOutJdbcConnection(ConnectionFactoryNotPooledImpl.java: 46)     
org.apache.ojb.broker.accesslayer.ConnectionFactoryAbstractImpl.lookupConnection(ConnectionFactoryAbstractImpl.java: 144)     
org.apache.ojb.broker.accesslayer.ConnectionManagerImpl.getConnection(ConnectionManagerImpl.java: 121)     
org.apache.ojb.broker.accesslayer.StatementManager.getPreparedStatement(StatementManager.java: 620)     
org.apache.ojb.broker.accesslayer.JdbcAccessImpl.executeQuery(JdbcAccessImpl.java: 293)     
org.apache.ojb.broker.accesslayer.RsQueryObject.performQuery(RsQueryObject.java: 93)     
org.apache.ojb.broker.accesslayer.RsIterator.(RsIterator.java: 194)     
org.apache.ojb.broker.core.RsIteratorFactoryImpl.createRsIterator(RsIteratorFactoryImpl.java: 63)     
org.apache.ojb.broker.core.PersistenceBrokerImpl.getRsIteratorFromQuery(PersistenceBrokerImpl.java: 2242)     
org.apache.ojb.broker.core.PersistenceBrokerImpl.getIteratorFromQuery(PersistenceBrokerImpl.java: 2205)     
org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery(QueryReferenceBroker.java: 135)     
org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery(QueryReferenceBroker.java: 281)     
org.apache.ojb.broker.core.PersistenceBrokerImpl.getCollectionByQuery(PersistenceBrokerImpl.java: 1602)     
kos.generator.broker.PB.getCollectionByQuery(PB.java: 50)     
org.apache.ojb.broker.core.DelegatingPersistenceBroker.getCollectionByQuery(DelegatingPersistenceBroker.java: 405)     
org.apache.ojb.broker.core.DelegatingPersistenceBroker.getCollectionByQuery(DelegatingPersistenceBroker.java: 405)     
kos.wnetz.om.PropertySetDefinition.loadPropertySetInstances(PropertySetDefinition.java: 381)     
kos.wnetz.om.PropertySetDefinition.getInstances(PropertySetDefinition.java: 55)     
kos.wnetz.om.PropertySetDefinition.getPropertySetClientInstance(PropertySetDefinition.java: 162)     
... 126 weitere Elemente...
Ursache dafür war: 
java.sql.SQLNonTransientConnectionException: Too many connections     
com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java: 110)     
com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java: 97)     
com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java: 122)     
com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java: 836)     
com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java: 456)     
com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java: 246)     
com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java: 199)     
java.sql.DriverManager.getConnection(DriverManager.java: 683)     
java.sql.DriverManager.getConnection(DriverManager.java: 191)     
org.apache.ojb.broker.accesslayer.ConnectionFactoryAbstractImpl.newConnectionFromDriverManager(ConnectionFactoryAbstractImpl.java: 284)     
org.apache.ojb.broker.accesslayer.ConnectionFactoryNotPooledImpl.checkOutJdbcConnection(ConnectionFactoryNotPooledImpl.java: 46)     
org.apache.ojb.broker.accesslayer.ConnectionFactoryAbstractImpl.lookupConnection(ConnectionFactoryAbstractImpl.java: 144)     
org.apache.ojb.broker.accesslayer.ConnectionManagerImpl.getConnection(ConnectionManagerImpl.java: 121)     
org.apache.ojb.broker.accesslayer.StatementManager.getPreparedStatement(StatementManager.java: 620)     
org.apache.ojb.broker.accesslayer.JdbcAccessImpl.executeQuery(JdbcAccessImpl.java: 293)     
org.apache.ojb.broker.accesslayer.RsQueryObject.performQuery(RsQueryObject.java: 93)     
org.apache.ojb.broker.accesslayer.RsIterator.(RsIterator.java: 194)     
org.apache.ojb.broker.core.RsIteratorFactoryImpl.createRsIterator(RsIteratorFactoryImpl.java: 63)     
org.apache.ojb.broker.core.PersistenceBrokerImpl.getRsIteratorFromQuery(PersistenceBrokerImpl.java: 2242)     
org.apache.ojb.broker.core.PersistenceBrokerImpl.getIteratorFromQuery(PersistenceBrokerImpl.java: 2205)     
... 135 weitere Elemente...
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