Protocol Violation. Oracle-JDBC-Treiber Problem

Könnte mir jemand helfen mit der nächsten Ausnahme:

[2013.08.14 09:01:56:173] ERROR: org.springframework.jdbc.UncategorizedSQLException: PreparedStatementCallback; uncategorized SQLException for SQL [INSERT INTO INDICATOR_VALUES(ID, VALUE, REF_CLIENT_ID, REF_MANAGING_INDICATOR_ID) VALUES(INDICATOR_VALUE_ID_SEQUENCE.NEXTVAL, ?, ?, ?)]; SQL state [99999]; error code [17401]; Protocol violation; nested exception is java.sql.BatchUpdateException: Protocol violation
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:83)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:603)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:615)
at org.springframework.jdbc.core.JdbcTemplate.batchUpdate(JdbcTemplate.java:884)
at com.cci.commons.dao.BaseDAO.batchUpdate(BaseDAO.java:186)

Version von ORACLE: Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit-Produktion

JAVA: 1.6.0_29-b11

JDBC-Treiber: ojdbc6.jar

Manifest-Version: 1.0
Ant-Version: Apache Ant 1.6.5
Created-By: 1.5.0_24-rev-b08 (Sun Microsystems Inc.)
Implementation-Vendor: Oracle Corporation
Implementation-Title: JDBC
Implementation-Version: 11.2.0.2.0
Repository-Id: JAVAVM_11.2.0.2.0_LINUX_100812.1
Specification-Vendor: Sun Microsystems Inc.
Specification-Title: JDBC
Specification-Version: 4.0
Main-Class: oracle.jdbc.OracleDriver
sealed: true

Name: oracle/sql/converter/
Sealed: false

Name: oracle/sql/
Sealed: false

Name: oracle/sql/converter_xcharset/
Sealed: false