Re: Is enq: TX - row lock contention a wait or syscall

The answer to your question is at the end of the 3rd paragraph of the blog note:

    "The event called enqueue: that's a semtimedop call."

Many years ago there was just one event relating to enqueues, and it was called "enqueue".  Now there are several hundred very specific "enqueue waits", of which "enq: TX - row lock contention". So yes, it's a syscall, but the full text of the name also gives some background to what prompted the syscall.

Regards
Jonathan Lewis
 


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From: oracle-l-bounce_at_freelists.org <oracle-l-bounce_at_freelists.org> on behalf of kunwar singh <krishsingh.111_at_gmail.com>
Sent: 20 January 2020 14:29
To: ORACLE-L
Subject: Is enq: TX - row lock contention a wait or syscall

Hi Listers,
I am reading the below blog:

http://carymillsap.blogspot.com/2009/02/dang-it-people-theyre-syscalls-not.html

So i have one basic question. Is  enq: TX - row lock contention also a syscall then or am i simplifying it too much?

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Cheers,
Kunwar
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