java.sql.SQLException: ORA-00900: invalid SQL statement

Issue

• We are getting IO exception: Connection timed out; nested exception is java.sql.SQLException. We are frequently getting sql connection timeout exceptions from two of the servers.

Io exception: Connection timed out; nested exception is java.sql.SQLException: Io exception: Connection timed out
at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.doTranslate(SQLErrorCodeSQLExceptionTranslator.java:253) [spring-jdbc-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72) [spring-jdbc-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:407) [spring-jdbc-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:456) [spring-jdbc-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:464) [spring-jdbc-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.springframework.jdbc.core.JdbcTemplate.queryForList(JdbcTemplate.java:495) [spring-jdbc-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:213) [spring-web-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126) [spring-web-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96) [spring-webmvc-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617) [spring-webmvc-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578) [spring-webmvc-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80) [spring-webmvc-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923) [spring-webmvc-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852) [spring-webmvc-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882) [spring-webmvc-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789) [spring-webmvc-3.1.2.RELEASE.jar:3.1.2.RELEASE]
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:754) [jboss-servlet-api_3.0_spec-1.0.2.Final-redhat-1.jar:1.0.2.Final-redhat-1]
....................
Caused by: java.sql.SQLException: Io exception: Connection timed out
        at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112) [ojdbc14-10.2.0.3.0.jar:Oracle JDBC Driver version - "10.2.0.3.0"]
        at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146) [ojdbc14-10.2.0.3.0.jar:Oracle JDBC Driver version - "10.2.0.3.0"]
        at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:255) [ojdbc14-10.2.0.3.0.jar:Oracle JDBC Driver version - "10.2.0.3.0"]
        at oracle.jdbc.driver.T4CStatement.executeForDescribe(T4CStatement.java:817) [ojdbc14-10.2.0.3.0.jar:Oracle JDBC Driver version - "10.2.0.3.0"]
        at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:1039) [ojdbc14-10.2.0.3.0.jar:Oracle JDBC Driver version - "10.2.0.3.0"]
        at oracle.jdbc.driver.T4CStatement.executeMaybeDescribe(T4CStatement.java:841) [ojdbc14-10.2.0.3.0.jar:Oracle JDBC Driver version - "10.2.0.3.0"]
....................

Caused by: java.sql.SQLException: ORA-00900: invalid SQL statement

    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112) [ojdbc14-10.2.0.3.0.jar:Oracle JDBC Driver version - "10.2.0.3.0"]
    at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:331) [ojdbc14-10.2.0.3.0.jar:Oracle JDBC Driver version - "10.2.0.3.0"]
    at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:288) [ojdbc14-10.2.0.3.0.jar:Oracle JDBC Driver version - "10.2.0.3.0"]
    at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:745) [ojdbc14-10.2.0.3.0.jar:Oracle JDBC Driver version - "10.2.0.3.0"]
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