Pg_dump Error Canceling Query Due To User Request
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Error Canceling Statement Due To User Request Postgres
due to user request My Software Versions: PostgreSQL 9.1.6 on x86_64-redhat-linux-gnu, compiled by gcc (GCC) 4.7.2 20120921 (Red Hat 4.7.2-2), 64-bit". My postgresql driver is: postgresql-9.2-1000.jdbc4.jar Using java version: Java 1.7 Clue: My postgresql database is on a solid state hard drive and this error happens randomly and sometimes not at all. java postgresql exception share|improve this question edited Nov 14 '12 at 15:14 asked Oct 28 '12 at 23:29 Eric Leschinski 47.1k23221191 query cancelled on user's request Having same issues on PostgreSQL 9.2.1 (PostgreSQL 9.2.1 on x86_64-unknown-linux-gnu, compiled by gcc (GCC) 4.1.2 20080704 (Red Hat 4.1.2-52), 64-bit), with same JDK and postgresql-9.2-1001.jdbc4.jar driver. Database is on spinning drive, statement cancellations are happening randomly, application doesn't cancel any SQL statements and statement timeout is set to 0 (indefinite). No reason / solution has been identified yet. –reta Jan 3 '13 at 14:40 add a comment| 4 Answers 4 active oldest votes up vote 6 down vote accepted We have figured out the the cause of this issue. It's explained by buggy implementation of setQueryTimeout() in latest JDBC drivers 9.2-100x. It might not happen if you open / close connection manually, but very often happens with connection pooling in place and autocommit set to false. In this case, setQueryTimeout() should be called with non-zero value (as an example, using Spring framework @Transactional( timeout = xxx ) annotation). It turns out, whenever SQL exception is raised during the statement execution, the cancellation timer hasn't been cancelled and stays alive (that's how it is implemented). Because of pooling, connection behind is not closed but is returned to the pool. Later on, when cancellation timer triggers, it randomly cancels the query currently associated with the connection this timer has been created with. At this moment, it's a totally different query which explains the randomness effect. The suggested
since yesterday with dumping/loading dataand even running vacuum analyse. The good news is that I've sorted it outand things seem to running smoothly again.There may be a bug postgresql statement_timeout in there somewhere, or at least a degree of fragilitythat may deserve
Sqlstate 57014
some attention. I'm writing this now in the hope of gettingany feedback on what happened that anyone might have,
Postgres Lock Timeout
and perhaps it mighthelp someone out in the future.After a successful stress test of backup and restore 2 days ago, nothing wasworking today.The problem seemed to stem from some (I http://stackoverflow.com/questions/13114101/postgresql-error-canceling-statement-due-to-user-request thought) innocuous changes I made tothe postgresql.conf file.Reverting to the original file has rectified the problem.This is typical of the errors I got:pg_dump: ERROR: canceling query due to user requestpg_dump: SQL command to dump the contents of table "d_hi_mise_item_uri"failed: PQendcopy() failed.pg_dump: Error message from server: ERROR: canceling query due to userrequestpg_dump: The command was: COPY public.d_hi_mise_item_uri (ymd_uri, tenpo_cd,item_id, urisuu, urikin, araridaka,lst_genka, ave_genka, http://grokbase.com/t/postgresql/pgsql-admin/03cjp12xvg/error-canceling-query-due-to-user-request logic_tana_suu, henpintyuu_suu, tenji_suu, tuika_suu,idou_in_suu, idou_out_suu, rank_new_suu, rank_old_suu) TO stdout;The part "ERROR: canceling query due to user request" is the main part. Itoccured during vacuum analyse too.I setup a new server from scratch and got similar errors. It was significantthat I had copied the conf files from the previous installation.These are the settings that I changed:tcpip_socket = trueshared_buffers = 2048wal_buffers = 16checkpoint_segments = 8effective_cache_size = 50000random_page_cost = 2statement_timeout = 30000I thought that these are pretty conservative settings, even for my system.but maybe not.On the old server (Version is 7.4 running on turbo linux 7 (kernal2.4.18-15, libc ver 2.2.4-13)) under virtual pc under windows 2000) . TheLinux kernal settings are default, and the PC has 1GB of RAM, at about halfof which should be available to the the linux system.I'm going to experiment with the conf settings one at a time from now andsee what happens. I'm also hoping to remove the need for virtual PC as itseems to complicate configuration. Unfortunately the development serverdoesn't resemble the intended production configuration in the least, so itseems somewhat pointless anyway.regardsIain reply Tweet Search Discussions Search All Groups Postgre
the contents of table "[table_name]" failed: PQgetResult() failed.pg_dump: Error message from server: ERROR: canceling statement due to conflict with recoveryDETAIL: User query might have needed to see row versions that must be http://visibletrap.blogspot.com/2013/04/pgdump-error-message-from-server-error.html removed.pg_dump: The command was: COPY public.[table_name] ([comma-separated column names]) TO stdout; I turns out that we can't execute long query onHot Standby mode server. Right now, there's no perfect solution to this problem but there are some http://www.justskins.com/forums/out-of-memory-error-167011.html couples of workarounds. Make a dump from master. Setmax_standby_archive_delayandmax_standby_streaming_delayto be bigger that amount of time it needs to export a dump. This will make slave catching up master version slower. It's not likely to work for due to a big database. Pause sync, make a dump and the resume sync. You can pause sync with function pg_xlog_replay_pause() and resume with functionpg_xlog_replay_resume(). See more details on this 2 functions from9.24. System Administration FunctionsandNew Replication and Recovery Features in PostgreSQL 9.1. Note that we should not pause it too long (> 24 hours), otherwise I might not be able to resume. Mailing list related to this issue:Hot Standby - ERROR: canceling statement due canceling statement due to conflict with recovery Posted by Tap at 3:55 PM Email ThisBlogThis!Share to TwitterShare to FacebookShare to Pinterest Labels: PostgreSQL No comments: Post a Comment Newer Post Older Post Home Subscribe to: Post Comments (Atom) Blog Archive ► 2016 (16) ► September (1) ► August (3) ► July (1) ► June (2) ► May (4) ► April (2) ► February (3) ► 2015 (17) ► November (2) ► October (2) ► September (2) ► August (1) ► July (1) ► June (2) ► May (1) ► April (1) ► March (3) ► January (2) ► 2014 (18) ► December (2) ► October (1) ► August (2) ► July (3) ► June (1) ► May (2) ► March (2) ► February (1) ► January (4) ▼ 2013 (19) ► December (1) ► October (1) ► August (2) ► May (4) ▼ April (3) pg_dump: Error message from server: ERROR: cancel... [RSpec] Refer to let value that has the same name ... [Watched] Go at Google ► March (2) ► February (5) ► January (1) ► 2012 (15) ► November (3) ► October (4) ► September (1) ► July (2) ► June (2) ► May (2) ► March (1) ► 2011 (32) ► December (4) ► November (2) ► October (7) ► September (3) ► August (4) ► July
this query in psql over a 170 million rows table: select data, usuario, sum(pontos), sum(wus) from usuarios group by data, usuario FC2 PG 7.4.6 1GB mem Linux s1 2.6.9-1.11_FC2 #1 Sun Jan 2 15:49:30 EST 2005 i686 athlon i386 GNU/Linux logfile: LOG: checkpoints are occurring too frequently (2 seconds apart) HINT: Consider increasing the configuration parameter "checkpoint_segments". .... LOG: recycled transaction log file "000001D70000009A" LOG: removing transaction log file "000001D700000097" .... ERROR: canceling query due to user request LOG: could not send data to client: Broken pipe LOG: unexpected EOF on ... Thread Tools Show Printable Version Email this Page… Subscribe to this Thread… Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode February 7th,05:07 PM #1 Out of memory error I had an Out of Memory error while running this query in psql over a 170 million rows table: select data, usuario, sum(pontos), sum(wus) from usuarios group by data, usuario FC2 PG 7.4.6 1GB mem Linux s1 2.6.9-1.11_FC2 #1 Sun Jan 2 15:49:30 EST 2005 i686 athlon i386 GNU/Linux logfile: LOG: checkpoints are occurring too frequently (2 seconds apart) HINT: Consider increasing the configuration parameter "checkpoint_segments". .... LOG: recycled transaction log file "000001D70000009A" LOG: removing transaction log file "000001D700000097" .... ERROR: canceling query due to user request LOG: could not send data to client: Broken pipe LOG: unexpected EOF on client connection postgresql.conf (everything else default): shared_buffers = 3000 sort_mem = 131072 vacuum_mem = 131072 max_fsm_pages = 300000 fsync = false wal_buffers = 256 checkpoint_segments = 32 extra_float_digits = 2 lc_messages = 'C' lc_monetary = 'pt_BR.UTF-8' lc_numeric = 'pt_BR.UTF-8' lc_time = 'pt_BR.UTF-8' var/log/messages: Feb 7 15:29:32 s1 su(pam_unix)[24675]: session closed for user root Feb 7 16:30:22 s1 kernel: oom-killer: gfp_mask=0x1d2 Feb 7 16:30:22 s1 kernel: Mem-info: Feb 7 16:30:22 s1 kernel: DMA per-cpu: Feb 7 16:30:22 s1 kernel: cpu 0 hot: low 2, high 6, batch 1 Feb 7 16:30:22 s1 kernel: cpu 0 cold: low 0, high 2, batch 1 Feb 7 16:30:22 s1 kernel: Normal per-cpu: Feb 7 16:30:22 s1 kernel: cpu 0 hot: low 32, high 96, batch 16 Feb 7 16:30:22 s1 kernel: cpu 0 cold: low 0, high 32, batch 16 Feb 7 16:30:22 s1 kernel: HighMem per-cpu: Feb 7 16:30:22 s1 kernel: cpu 0 hot: low 12, high 36, batch 6 Feb 7 16:30:22 s1 kernel: cpu 0 cold: low 0, high 12, batch 6 Feb 7 16:30:22 s1 kernel: Feb 7 16:30:22 s1 ke