ORA-01461: can bind a LONG value only for insert into a LONG column-Occurs when querying

Question

When I try to query objects, I end up with following error:

ORA-01461: can bind a LONG value only for insert into a LONG column

Could someo

Answer 1

In my particular case, I was trying to store a Base64 encoded file into a table BLOB field, using Mybatis.

So in my xml I had:

<insert id="save..." parameterType="...DTO">
    <selectKey keyProperty="id" resultType="long" order="BEFORE">
        SELECT SEQ.nextVal FROM DUAL
    </selectKey>
    insert into MYTABLE(
        ID,
        ...,
        PDF
    ) values (
        #{id, jdbcType=VARCHAR},
        ...,
        #{tcPdf, jdbcType=BLOB},
    )
</insert>

and in my DTO:

String getPdf(){
    return pdf;
}

That makes to Mybatis threat as if were a String char sequence and try to store it as a Varchar. So my solution was the following:

In my DTO:

Byte[] getPdf(){
    return pdf.getBytes();
}

And worked.

I hope this could help anybody.

Answer 2

I was facing the same issue and solve it by just replacing VARCHAR with CLOB. This link helped me out.

Answer 3

I encountered this error message when trying to insert String into an XMLTYPE column.

Specifically using Java's PreparedStatement like this:

ps.setString('XML', document);

where XML here is defined as XMLTYPE.