我正在尝试使用v8 jdbc驱动程序从Oracle 12.2c数据库中读取大量SQL数据（我也尝试过v7驱动程序）
每次失败并出现以下错误
2018/02/22 10:12:53: java.sql.SQLException: Protocol violation: [ 6, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, 21, 7, ]
2018/02/22 10:12:53: at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:645)
2018/02/22 10:12:53: at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:252)
2018/02/22 10:12:53: at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:612)
2018/02/22 10:12:53: at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:226)
2018/02/22 10:12:53: at oracle.jdbc.driver.T4CPreparedStatement.fetch(T4CPreparedStatement.java:1023)
2018/02/22 10:12:53: at oracle.jdbc.driver.OracleStatement.fetchMoreRows(OracleStatement.java:3353)
2018/02/22 10:12:53: at oracle.jdbc.driver.InsensitiveScrollableResultSet.fetchMoreRows(InsensitiveScrollableResultSet.java:736)
2018/02/22 10:12:53: at oracle.jdbc.driver.InsensitiveScrollableResultSet.absoluteInternal(InsensitiveScrollableResultSet.java:692)
2018/02/22 10:12:53: at oracle.jdbc.driver.InsensitiveScrollableResultSet.next(InsensitiveScrollableResultSet.java:406)
2018/02/22 10:12:53: at com.connexica.cxair.indexes.crawler.DatabaseCrawlerAgent.process(DatabaseCrawlerAgent.java:669)
2018/02/22 10:12:53: at com.connexica.cxair.indexes.crawler.BaseCustomCrawlerAgent.restart(BaseCustomCrawlerAgent.java:249)
2018/02/22 10:12:53: at com.connexica.cxair.indexes.crawler.BaseCustomCrawlerAgent.start(BaseCustomCrawlerAgent.java:183)
2018/02/22 10:12:53: at com.connexica.cxair.indexes.crawler.ThreadCrawlerAgent.run(ThreadCrawlerAgent.java:69)
我现在尝试使用基于SQL的SQL / a视图和从SQL创建的表。视图和SQL每次都在完全相同的行上失败。表格有效。
任何帮助将不胜感激