fix OcciStmt::bindBlob failing depending on the blob content

rdbms/wrapper/OcciStmt.cpp

@@ -139,7 +139,11 @@ void OcciStmt::bindUint64(const std::string &paramName, const optional<uint64_t>
 //------------------------------------------------------------------------------
 void OcciStmt::bindBlob(const std::string &paramName, const std::string &paramValue) {
   try {
-    bindString(paramName, paramValue);
+    const unsigned paramIdx = getParamIdx(paramName);
+    std::unique_ptr<unsigned char> buffer = std::unique_ptr<unsigned char>(new unsigned char[paramValue.size()]);
+    memcpy(buffer.get(), paramValue.c_str(), paramValue.length());
+    oracle::occi::Bytes paramBytes(buffer.get(), paramValue.length(), 0);
+    m_stmt->setBytes(paramIdx, paramBytes);
   } catch(exception::Exception &ex) {
     throw exception::Exception(std::string(__FUNCTION__) + " failed: " + ex.getMessage().str());
   }