rdelaage
/
postgresql
mirror of https://git.postgresql.org/git/postgresql.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Clarify that pg_dump takes ACCESS SHARE lock 

Add link to the description of lock levels to avoid confusing "shared locks"
with SHARE locks.

Florin Irion

Reviewed-by: Álvaro Herrera, Tom Lane, and Nathan Bossart
Discussion: https://www.postgresql.org/message-id/flat/d0f30cc2-3c76-1d43-f291-7c4b2872d653@gmail.com
This commit is contained in:
John Naylor 2022-07-01 11:41:36 +07:00
parent 389869af59
commit 4e2e8d71fe
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
doc/src/sgml/ref/pg_dump.sgml
View File

@ -372,8 +372,8 @@ PostgreSQL documentation
<para>
Requesting exclusive locks on database objects while running a parallel dump could
cause the dump to fail. The reason is that the <application>pg_dump</application> leader process
requests shared locks on the objects that the worker processes are going to dump later
in order to
requests shared locks (<link linkend="locking-tables">ACCESS SHARE</link>) on the
objects that the worker processes are going to dump later in order to
make sure that nobody deletes them and makes them go away while the dump is running.
If another client then requests an exclusive lock on a table, that lock will not be
granted but will be queued waiting for the shared lock of the leader process to be