The forum will experience an outage sometime between February 10 at 7:00pm EST and February 12 at 11:59 EST for installation of security updates. The actual time and duration of the outage are unknown but attempts will be made to minimize the downtime. We apologize for any inconvenience.

Starting with 12.0.1, the 32-bit MobiLink server is no longer supported on 64-bit operating systems.

This means that if you accidentally CONTINUE to use the 32-bit MobiLink server and client on the same machine after upgrading to 12.0.1, you will suddenly get a "Protocol version mismatch" as shown below.

That's because the old version 12.0.0 32-bit version of mlsrv12.exe is not removed by the 12.0.1 installation even though a 12.0.1 copy is not installed. However, the 32-bit version of dbmlsync.exe is installed. That means when you run the same sync setup that worked before, it starts failing with the oh-so-meaningful "Protocol version mismatch".

As Volker pointed out in a comment, this is not a bug... but it sure as heck is confusing :)

I. 2011-03-07 09:24:00. SQL Anywhere MobiLink Server Version
I. 2011-03-07 09:30:07.  System event on shared administrative connection:
                        SELECT property_set_name, property_name, property_value FROM ml_property WHERE component_name = ? ORDER BY property_set_name 
I. 2011-03-07 09:30:07.  Translated SQL:
                        SELECT property_set_name, property_name, property_value FROM ml_property WHERE component_name = ? ORDER BY property_set_name 
E. 2011-03-07 09:30:31.  (,) [-10004] Protocol version mismatch -- expecting 49 but received 65
I. 2011-03-07 09:30:31.  (,) failed reading command with id:1 and handle:1

I. 2011-03-07 09:30:31.  (,) Synchronization failed
I. 2011-03-07 09:29:40. SQL Anywhere MobiLink Client Version
I. 2011-03-07 09:30:31. Waiting for MobiLink to apply upload
E. 2011-03-07 09:30:31. Error code from MobiLink server: -10244
E. 2011-03-07 09:30:31. Server error: The MobiLink server has encountered an error and the synchronization has been aborted
E. 2011-03-07 09:30:31. Data read failed.  Requested 2 bytes but got 0 bytes.
E. 2011-03-07 09:30:31. Unable to read 0 bytes.
I. 2011-03-07 09:30:31. End synchronizing subscription(s) 'clifit'
I. 2011-03-07 09:30:31. Disconnecting from MobiLink server

asked 07 Mar '11, 14:49

Breck%20Carter's gravatar image

Breck Carter
accept rate: 21%

edited 08 Mar '11, 13:00


Hmm, Breck, is that a question? - AFAIK, 12.0.1 doesn't install the 32-bit ML server on 64-bit systems (possibly leaving 12.0.0 32-bit ML server components "un-upgraded"). Cf. (as you will have checked already...).

(07 Mar '11, 21:15) Volker Barth

@Breck: To clarify: T don't claim to know whether this behaviour should be regarded as a bug or not. - Personally, I find it at least surprising when an upgrade neither does update nor does remove a component when that component is considered obsolete:)

(08 Mar '11, 14:07) Volker Barth

FWIW, the Linux installer does upgrade any existing mlsrv12 binaries to ones that won't run (i.e. they spit out an error message). I cannot speak for the Windows installer, though.

permanent link

answered 11 Mar '11, 11:49

Phil%20Mitchell's gravatar image

Phil Mitchell
accept rate: 27%

Your answer
toggle preview

Follow this question

By Email:

Once you sign in you will be able to subscribe for any updates here



Answers and Comments

Markdown Basics

  • *italic* or _italic_
  • **bold** or __bold__
  • link:[text]( "title")
  • image?![alt text](/path/img.jpg "title")
  • numbered list: 1. Foo 2. Bar
  • to add a line break simply add two spaces to where you would like the new line to be.
  • basic HTML tags are also supported

Question tags:


question asked: 07 Mar '11, 14:49

question was seen: 1,620 times

last updated: 11 Mar '11, 11:49