Is it ok to enquire the editor about the accceptance chance of a paper which is under review for 1.5 years I have submitted two papers in a top-tier applied mathematics journal. The first one is a short paper and the second one is a full paper. After 7 months the short paper and after 8 month the full paper got major revision. For the short paper I submitted the revised paper after 5 months. Finally, this paper got rejected after 7 months after I submitted the revision. Therefore it was under review for (7+5+7) months i.e. around 1.5 yr including the time I took for revising the paper. For the second paper I submitted the revised paper after 5 months. After this 5 months have passed. Therefore it is under review for (8+5+5) months i.e. 1.5 year. Will it be ok if I politely ask the editor about the acceptance chance of the full paper. One week back I asked the editor, he told me that they are waiting for one review. After that they will send the decision. Is it ok to request the editor whether he can confirm its acceptance chance ? If they want to reject reject now only, so that I can send to other journals. I will be applying for some jobs now. I need to know this information urgently. I am concerned because from the first round reviews I am very much hopeful about its acceptance. If I pressurize them they may reject it.
I don't think the editor could confirm the acceptance chance without communicating with the referee. Perhaps you could ask the editor to expedite the process by asking the referee to cut short the report and submit it immediately if it's going to be negative.

You might not wish to do this if you want a more thorough report in the case of rejection.

You could alternatively ask the editor to send a reminder to the referee,  whether the referee agreed to return a report before a particular date, and confirm that they had not lost contact with the referee (since a long time had passed).