Re: BUG #18108: server process was terminated by signal 11: Segmentation fault

I reproduced the operation and got this stack trace:

       Program received signal SIGSEGV, Segmentation fault.

0x00007efe187b4598 in __memcpy_ssse3_back () from /lib64/libc.so.6

Continuing.

Program terminated with signal SIGSEGV, Segmentation fault.

The program no longer exists.

Error detected on fd 0

error detected on stdin

Sorry I wasn't clear, the rows 1.5w refers to the number of formatted lines of sql code (roughly 2.5w characters), not the number of data rows

On Thu, 14 Sept 2023 at 21:04, PG Bug reporting form
<noreply@postgresql.org> wrote:

Recently I executed a merge SQL with over 1.5W rows inside PG15.2, which

caused the database to report a crash error and then terminated all database

sessions，but changing the merge to insert syntax worked fine, I'm trying to

understand where this is and if I need to change the settings.

Below are the DB and OS logs(ID or address data was changed to unreal):

It would be very difficult for us to do anything based on the
information you've supplied here.

Are you able to get a stack trace (See [1]) or come up with a
self-contained script to reproduce it?

I'm also not sure how many rows 1.5W is.

David

[1] https://wiki.postgresql.org/wiki/Getting_a_stack_trace_of_a_running_PostgreSQL_backend_on_Linux/BSD