[Tex/LaTex] Abstract and TOC-start on odd page

Question

I'm having a twosided document (compiled with pdflatex, pdfTeX 3.14159265-2.6-1.40.16).
How can I make the abstract and TOC begin on odd pages? I don't know if this is even default, but for me it doesn't work. I want completely blank pages (pagestyle=empty) on the pages before.

Here an MWE:

\documentclass[
a4paper,
twoside,
openright,
12pt
]{scrreprt}

\begin{document}

\include{titlepage} %...

%here a blank page
\begin{abstract}
... 
\end{abstract}
%and here a blank page
\pagenumbering{roman}
\setcounter{page}{1}
\tableofcontents

\end{document}

I already made experiments with \newpage and \clearpage, but this doesn't work properly (headers included) and is hackish.
The nextpage-package and \cleardoublepage-command have no effects.
The missing page before the TOC has to do with the

Answer 1

Use \cleardoublepage or better the KOMA-Script command \cleardoubleoddpage before each \pagenumbering command. Then there is no need to set the page counter explicitly.

\documentclass[
a4paper,
twoside,
open=right,
fontsize=12pt
]{scrreprt}
\usepackage{blindtext}% only for dummy text

\begin{document}
\title{Title}\author{Author}\maketitle

%\cleardoubleoddpage
\begin{abstract}
\blindtext
\end{abstract}

\cleardoubleoddpage% <- add this before each \pagenumbering command
\pagenumbering{roman}
\tableofcontents
\blinddocument
\end{document}

results in