diff --git a/fhem/CHANGED b/fhem/CHANGED
index 94a215c43..e92003ecf 100644
--- a/fhem/CHANGED
+++ b/fhem/CHANGED
@@ -1,5 +1,7 @@
 # Add changes at the top of the list. Keep it in ASCII, and 80-char wide.
 # Do not insert empty lines here, update check depends on it.
+ - bufix:   93_DbRep: fix readingRename without leading device Forum: #104024,
+                      some more fixes
  - bugfix:  88_Timer: fix code #103848 + added check load file
  - feature: 95_Dashboard: new attr "dashboard_homeTab", "dashboard_webRefresh",
                           new set command activateTab, bugfixes, comref revised
diff --git a/fhem/FHEM/93_DbRep.pm b/fhem/FHEM/93_DbRep.pm
index 96acacd50..68f7f318c 100644
--- a/fhem/FHEM/93_DbRep.pm
+++ b/fhem/FHEM/93_DbRep.pm
@@ -58,6 +58,7 @@ no if $] >= 5.017011, warnings => 'experimental::smartmatch';
 
 # Version History intern
 our %DbRep_vNotesIntern = (
+  "8.27.2" => "27.09.2019  fix export data to file, fix delDoublets if MySQL and VALUE contains \, fix readingRename without leading device ",
   "8.27.1" => "22.09.2019  comma are shown in sqlCmdHistory, Forum: #103908 ",
   "8.27.0" => "15.09.2019  save memory usage by eliminating \$hash -> {dbloghash}, fix warning uninitialized value \$idevice in split ",
   "8.26.0" => "07.09.2019  make SQL Wildcard (\%) possible as placeholder in a reading list: https://forum.fhem.de/index.php/topic,101756.0.html ".
@@ -765,6 +766,9 @@ sub DbRep_Set($@) {
       DbRep_Main($hash,$opt);
       
   } elsif ($opt eq "readingRename") {
+      shift @a;
+      shift @a;
+      $prop = join(" ",@a);      # Readingname kann Leerzeichen enthalten
       $hash->{LASTCMD} = $prop?"$opt $prop":"$opt";
       my ($oldread, $newread) = split(",",$prop);
       if (!$oldread || !$newread) {return "Both entries \"old reading name\", \"new reading name\" are needed. Use \"set $name readingRename oldreadingname,newreadingname\" ";}
@@ -4467,12 +4471,12 @@ sub change_Push($) {
 	 $sth = $dbh->prepare($sql) ;
  
  } elsif ($renmode eq "readren") {
-     $old = delete $hash->{HELPER}{OLDREAD};        # Wert besteht aus [device]:old_readingname
-     ($dev,$old) = split(":",$old,2);
+     $old = delete $hash->{HELPER}{OLDREAD};              
+     ($dev,$old) = split(":",$old,2) if($old =~ /:/);        # Wert besteht aus [device]:old_readingname, device ist optional
      $new = delete $hash->{HELPER}{NEWREAD};
 	 
 	 # SQL zusammenstellen für DB-Operation
-     Log3 ($name, 5, "DbRep $name -> Rename old reading name \"$old\" ".($dev?"(of device $dev)":"")." to new reading name \"$new\" in database $dblogname ");
+     Log3 ($name, 5, "DbRep $name -> Rename old reading name \"".($dev?"$dev:$old":"$old")."\" to new reading name \"$new\" in database $dblogname ");
 	 
 	 # prepare DB operation
 	 $old =~ s/'/''/g;       # escape ' with ''
@@ -4975,6 +4979,7 @@ sub deldoublets_DoParse($) {
  my $dbconn     = $dbloghash->{dbconn};
  my $dbuser     = $dbloghash->{dbuser};
  my $dblogname  = $dbloghash->{NAME};
+ my $model      = $dbloghash->{MODEL};
  my $dbpassword = $attr{"sec$dblogname"}{secret};
  my $utf8       = defined($hash->{UTF8})?$hash->{UTF8}:0;
  my $limit      = AttrVal($name, "limit", 1000);
@@ -5067,6 +5072,7 @@ sub deldoublets_DoParse($) {
              $dev  =~ s/'/''/g;                                 # escape ' with ''
              $read =~ s/'/''/g;                                 # escape ' with ''
              $val  =~ s/'/''/g;                                 # escape ' with ''
+			 $val  =~ s/\\/\\\\/g if($model eq "MYSQL");        # escape \ with \\ für MySQL
              $st = [gettimeofday];
              my $dsql = "delete FROM $table WHERE TIMESTAMP = '$dt' AND DEVICE = '$dev' AND READING = '$read' AND VALUE = '$val' limit $limit;";
              my $sthd = $dbh->prepare($dsql); 
@@ -5420,15 +5426,16 @@ sub expfile_DoParse($) {
      }
  }
  
- Log3 ($name, 4, "DbRep $name - Export data to file: $file ".($ml?"splitted to parts of $ml lines":"")  );
- 
  $rsf =~ s/[:\s]/_/g; 
- my ($f,$e) = split(/\./,$file);
+ my ($f,$e) = $file =~ /(.*)\.(.*)/;
  $e    = $e?$e:"";
  $f    =~ s/%TSB/$rsf/g;
  my @t = localtime;
  $f    = ResolveDateWildcards($f, @t);
  my $outfile = $f.$part.$e;
+ 
+ Log3 ($name, 4, "DbRep $name - Export data to file: $outfile ".($ml?"splitted to parts of $ml lines":"")  );
+  
  if (open(FH, ">", $outfile)) {
      binmode (FH);
  } else {