MT4 error "Trading Context is busy"? | Forex Factory

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MT4 error "Trading Context is busy"?

  • #1
  • First Post: May 5, 2011 6:18am May 5, 2011 6:18am
Is this error thrown by mt4 client or from server side? I mean is it generated by the thread control system of MT4 platform or it's from server side?

Thanks!
  • #2
  • May 5, 2011 6:31am May 5, 2011 6:31am
i believe entirely client side. it's like sending a ping and then waiting for the ack which hasn't arrived yet.
Congratulations ScalaFX for coming out of the closet!
  • #3
  • May 5, 2011 6:43am May 5, 2011 6:43am
Extract from MetaEditor Reference:

Quote

To trade from experts and scripts, only one thread was provided that was launched in the program trade context (context of automated trading from experts and scripts). This is why, if this context is occupied with an expert trading operation, another expert or script cannot call trading functions at that moment due to error 146 (ERR_TRADE_CONTEXT_BUSY).
Better to say, only one expert (script) can trade at a time. All other experts that try to start trading will be stopped by Error 146. This article will find solutions for this problem.
  • #4
  • May 5, 2011 7:33am May 5, 2011 7:33am
Thanks for the information! but still I have a question: what if I log onto same account, using two MT4 platform instances. If I run only one same EA on each of them, still got trading context busy message, does this mean that it's account related rather than EA related?

Quoting metyyyy
Extract from MetaEditor Reference:

Better to say, only one expert (script) can trade at a time. All other experts that try to start trading will be stopped by Error 146. This article will find solutions for this problem.
  • #5
  • May 5, 2011 7:39am May 5, 2011 7:39am
Here is the original article. There are some answers on how to avoid this problem.
http://articles.mql4.com/141
  • #6
  • May 5, 2011 9:31am May 5, 2011 9:31am
Its client side. One (or both) of your EA's arent checking to make sure the context is clear (OK to order) - Its a mandatory step or eventually one EA will place a trade and before the trade completes the 2nd EA will also try to place an order - This will cause MT4 to usually lockup. Actually MT4 should simply reject the 2nd trade but... - You should be able to open MT4 and place any number of EA's on diff charts with no problem if the programmer did their job.
  • #7
  • Jul 21, 2011 6:15pm Jul 21, 2011 6:15pm
Using a demo MT4 account with a broker in Cyprus, I occasionally get "Trade Context is Busy" when I submit an order, and my order gets hung up in being executed. I logged off/on and it went away.

What does this message mean or indicate?

I do not use any EAs.

I have not received this message with any other MT4 brokers.

Thanks in advance.
  • #8
  • Apr 11, 2012 5:03am Apr 11, 2012 5:03am
Today, I experienced the same problem. Here is what I found:

MT4 Error: Trade Context Busy

This error is due to an EA trying to place an order when MT4 is not ready to accept the order. That is, only one expert (script) can trade at a time. All other experts that try to start trading will be stopped by Error 146. This may occur if multiple charts with EA's are opened in the same MT4 terminal, and they each try to make a trade at around the same time. Since MT4 can only handle one order at a time, the error will occur with those EA's that can not get through to the trade context.

One possible solution is to install mutiple MT4 terminals for the same account and setup fewer charts in each. Since each MT4 terminal has only one trade context, fewer EAs' will be fighting for it and have a better opportunity to get through.

EA develpers should build code into their products to work around this problem. It is not a problem with the virtual desktop (or your PC), but the EA and its interaction with MT4. Some situations at the broker can also make it come and go. Once you start seeing this problem, you should close MT4 and re-open it in order to free up the thread.

This forum explains the problem and resolution better:http://www.metaquotes.net/forum/1186/ and http://www.metaquotes.net/forum/1560/

For EA coders, how to fix it: http://articles.mql4.com/141

IBFX has published the following regarding the error:

You receive “Trade context is busy” when you try to process two or more orders at the same time. If you have placed a trade and do not wait until it processes completely and then try to place the same trade or a different trade the commands go into a loop and you get “Tread context is busy”. The only solution is to close down the platform and restart it.
  • #9
  • Apr 11, 2012 5:11am Apr 11, 2012 5:11am
Quoting mr.gardner
Today, I experienced the same problem. Here is what I found:

MT4 Error: Trade Context Busy

This error is due to an EA trying to place an order when MT4 is not ready to accept the order. That is, only one expert (script) can trade at a time. All other experts that try to start trading will be stopped by Error 146. This may occur if multiple charts with EA's are opened in the same MT4 terminal, and they each try to make a trade at around the same time. Since MT4 can only handle one order at a time, the error will occur with those EA's that...
I always place the following code just before an order is placed / closed to prevent this error, while still executing the trade / exit.

Inserted Code
while(IsTradeContextBusy()) Sleep(100);
RefreshRates();
  • #10
  • Feb 14, 2014 12:58am Feb 14, 2014 12:58am
Hello Everyone,

Im having this problem and I really do not know what to do, I tried reading about changing the actual code etc. but this is WAY beyond me. If someone can help me over skype or walk me through it I would be grateful. My broker is not being that helpful and leaving it to me, I only get these errors when trying to trade US indices or any commodity.

Please and thank you to all that can spend the time to help me fix this problem.

Thank you.
  • #11
  • Feb 14, 2014 2:54am Feb 14, 2014 2:54am
Quoting ldemarchi81
Hello Everyone, Im having this problem and I really do not know what to do, I tried reading about changing the actual code etc. but this is WAY beyond me. If someone can help me over skype or walk me through it I would be grateful. My broker is not being that helpful and leaving it to me, I only get these errors when trying to trade US indices or any commodity. Please and thank you to all that can spend the time to help me fix this problem. Thank you.
you need to be more specific about your problems...

is it everytime you try to trade these securities?
does the trade go through on the 2nd attempt?
are you trying to place multiple trades around the same time (for any security)?

if it is only on certain securities and on a single trade request chances are that it is your brokers problem and not your problem.
  • #12
  • Jun 30, 2016 10:12am Jun 30, 2016 10:12am
Hello,

I'm NOT using any EAs on the currency pair I'm referring to in this example, I'm placing a manual trade, and I get "Trade context is busy"....how is this possible?
  • #13
  • Jun 30, 2016 11:30am Jun 30, 2016 11:30am
It is server side error nothing to do with client.


Broker gives this error to prevent client from doing any trade operation.

In normal circumstances this error goes away in 1 or 2 sec , but when broker is shady it might go longer to few mins.
  • #14
  • Jun 30, 2016 1:53pm Jun 30, 2016 1:53pm
Quoting meyoik
Hello, I'm NOT using any EAs on the currency pair I'm referring to in this example, I'm placing a manual trade, and I get "Trade context is busy"....how is this possible?
its your broker co*k blocking you esp during news
practising coitus interruptus
  • #15
  • Last Post: Edited Jul 1, 2016 4:41am Jun 30, 2016 6:01pm | Edited Jul 1, 2016 4:41am
Quoting avibe
{quote} its your broker co*k blocking you
Quoting TradeWTUC
It is server side error nothing to do with client. Broker gives this error to prevent client from doing any trade operation. In normal circumstances this error goes away in 1 or 2 sec , but when broker is shady it might go longer to few mins.
Maybe the best thing to do is ask the broker -FxPro- directly and have them explain this to us....

Hello FxPro*
Quoting FxPro Global
{quote}
Quoting Lianna@FxPro
{quote} Hi meyoik
, maybe you can explain to us why I have 100+ "Trade context is busy" errors on an FxPro Market MT4 account? Each of these were manual trades I placed myself, NO EAs running on the pair.

Attached Image (click to enlarge)
Click to Enlarge Name: TradeContextisBusy.png Size: 11 KB


I have hundreds of these when I use my FxPro Market account. From that SAME computer I'm running MT4 from 2 other brokers, this has never happened with any other broker until I started using my FxPro Market account.

Let's see what FxPro has to say....stay tuned...

*PS: used quote from another post, so you would get the notification about this thread.
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