在Oracle数据库中将byte []数组作为blob插入ORA-01460：请求未实现或不合理的转换 [英] Inserting byte[] array as blob in Oracle Database getting ORA-01460: unimplemented or unreasonable conversion requested

问题描述

我有一个java存储过程，我试图将byte []数组插入表中的oracle blob字段。

I have a java stored procedure that I am trying to insert a byte[] array into an oracle blob field in a table.

我按如下方式创建一个预准备语句，但是当我执行预准备语句时它会随机失败。我已经缩小了问题来自pstmt.setBytes（4，content）。我得到的错误是：

I create a prepared statement as follows but it will randomly fail when I execute the prepared statement. I have narrowed down that the issue is coming from the pstmt.setBytes(4,content). The error I get is:

ORA-01460：请求未实现或不合理的转换。

ORA-01460: unimplemented or unreasonable conversion requested.

private static void insertFile(Connection connOracle, int zipFileId, byte[] data, String filepath, String filename ) throws SQLException {

try {
    String QUERY = "INSERT INTO files(file_id, zip_file_id, filename, file_path, content) VALUES(SEQ_FILE_ID.nextval,?,?,?,?)";

    PreparedStatement pstmt = connOracle.prepareStatement(QUERY);

    pstmt.setInt(1,zipFileId);
    pstmt.setString(2, filename);
    pstmt.setString(3, filepath);
    pstmt.setBytes(4, data);

    System.out.println("INSERTING file_id " + filepath + ", " + filename + " INTO DATABASE");

    pstmt.execute();
    pstmt.close();
}
catch (SQLException e) {
    throw new SQLException(e.getMessage());  
}

推荐答案

如果我没记错Oracle JDBC驱动程序（至少是较旧的驱动程序 - 您没有告诉我们您使用的是哪个版本）不支持 setBytes（）（或 getBytes（ ））。

If I recall correctly the Oracle JDBC drivers (at least older ones - you didn't tell us which version you are using) don't support setBytes() (or getBytes()).

根据我的经验，使用 setBinaryStream（）更加可靠并且稳定：

In my experience, using setBinaryStream() is much more reliable and stable:

InputStream in = new ByteArrayInputStream(data);
pstmt.setBinarySream(4, in, data.length);

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