I have taken dump for the db and it make it run short of memory for Postgresql.
I have then restarted postgresql but it failed to restart.And kept on giving me error
[FAIL] Starting PostgreSQL 9.4 database server: main[....] The PostgreSQL server failed to start. Please check the log output: ... failed!
failed!
and in log file there were following lines
2017-05-05 05:49:25 UTC LOG: could not close temporary statistics file "pg_stat_tmp/global.tmp": No space left on device
2017-05-05 05:49:30 UTC LOG: using stale statistics instead of current ones because stats collector is not responding
2017-05-05 05:49:35 UTC LOG: using stale statistics instead of current ones because stats collector is not responding
2017-05-05 05:49:35 UTC LOG: could not close temporary statistics file "pg_stat_tmp/db_0.tmp": No space left on device
2017-05-05 05:49:35 UTC LOG: could not write temporary statistics file "pg_stat_tmp/db_85990.tmp": No space left on device
2017-05-05 05:49:35 UTC LOG: could not close temporary statistics file "pg_stat_tmp/global.tmp": No space left on device
2017-05-05 05:49:40 UTC LOG: could not close temporary statistics file "pg_stat_tmp/db_0.tmp": No space left on device
2017-05-05 05:49:40 UTC LOG: could not close temporary statistics file "pg_stat_tmp/global.tmp": No space left on device
2017-05-05 05:49:45 UTC LOG: using stale statistics instead of current ones because stats collector is not responding
Please Help me to solve this issue if some one can.
thanks.
Related
I'm running an application with about 20 processes connected to a postgres DB (10.0) on windows server 2016.
Since about a month I have unexpected crashes of postgres.exe.
To isolate the problem I extended the logging by setting log_min_duration_statement = 0
This creates more detailed logfile. What I can see is:
LOG: server process (PID xxxxx) was terminated by exception
0xFFFFFFFF DETAIL: Failed process was running: COMMIT HINT: See C
include file "ntstatus.h" for a description of the hexadecimal value.
Then it tears down all 20 processes like this:
LOG: terminating any other active server processes
WARNING: terminating connection because of crash of another server process
DETAIL: The postmaster has commanded this server process to roll back the current transaction and exit, because another server process exited abnormally and possibly corrupted shared memory.
HINT: In a moment you should be able to reconnect to the database and repeat your command.
WARNING: terminating connection because of crash of another server process
DETAIL: The postmaster has commanded this server process to roll back the current transaction and exit, because another server process exited abnormally and possibly corrupted shared memory.Then DB recovers:
HINT: In a moment you should be able to reconnect to the database and repeat your command.
LOG: all server processes terminated; reinitializing
LOG: database system was interrupted; last known up at 2021-06-11 18:17:18 CEST
DB enters recovery mode
FATAL: the database system is in recovery mode
FATAL: the database system is in recovery mode
FATAL: the database system is in recovery mode
FATAL: the database system is in recovery mode
LOG: database system was not properly shut down; automatic recovery in progress
...
LOG: redo starts at 1B2/33319E58
FATAL: the database system is in recovery mode
LOG: invalid record length at 1B2/33D29930: wanted 24, got 0
LOG: redo done at 1B2/33D29908
LOG: last completed transaction was at log time 2021-06-11 18:21:39.830526+02
FATAL: the database system is in recovery mode
...
FATAL: the database system is in recovery mode
LOG: database system is ready to accept connections
Now it's running again like normal
The crashed PID xxxxx I can identify to a postgres.exe running for one of the 20 application processes. It's not always the same one. This happens about every 5-10 days.
Can anybody give me some advice how to track down the reason of this crash?
Extensions used:
oracle_fdw 2.0.0, PostgreSQL 10.0, Oracle client 11.2.0.3.0, Oracle server 11.2.0.2.0
Crashdump:
Followed the link :
https://wiki.postgresql.org/wiki/Getting_a_stack_trace_of_a_running_PostgreSQL_backend_on_Windows
Although the postgres user has "full control" of the crashdump folder in the security tab it does not write something. Folder stays empty.
Follow-Up on the comment #Laurenz Albe:
The COMMIT is not the reason of the crash. It is the last successfull executed command of the session. Explained on the following example:
Process gets a job and starts to do it's job
2021-06-15 16:27:51.100 CEST [25604] LOG: duration: 0.061 ms statement: DISCARD ALL
2021-06-15 16:27:51.100 CEST [25604] LOG: duration: 0.012 ms statement: BEGIN
2021-06-15 16:27:51.100 CEST [25604] LOG: duration: 0.015 ms statement: SET TRANSACTION ISOLATION LEVEL READ COMMITTED
now a lot of action going on within session 25604
and among others the oracle foreign datawrapper
2021-06-15 16:28:13.792 CEST [25604] LOG: duration: 0.016 ms execute <unnamed>: FETCH ALL FROM "<unnamed portal 689>"
finishes action successfully (data of the transaction in the database)
2021-06-15 16:28:13.823 CEST [25604] LOG: duration: 0.059 ms statement: COMMIT
a lot of action is going in different sessions
among others the oracle foreign datawrapper
more the 7 minutes afterwards the next job is requested and now postgres.exe crash
2021-06-15 16:36:01.524 CEST [17904] LOG: server process (PID 25604) was terminated by exception 0xFFFFFFFF
The process does not do DISCARD ALL, BEGIN and SET TRANSACTION ISOLATION LEVEL READ COMMITTED
It crashes immediately
My Conclusion:
"the possibly corrupted shared memory" was initiated by one of the processes before. Meaning between the last successful COMMIT and the new request.
That's a 7 minutes time span where the problem occurs.
Some feedback on this conclusion?
I had a docker container running timescaleDB. The database data was stored outside the container.
docker run -d --name timescale -v /<DATA>:/var/lib/postgresql/data timescale/timescaledb-postgis:latest-pg10
Something strange happened lately. I log in and see all the databases have suddenly vanished
I see the below in the log file
2021-03-13 11:32:00.215 UTC [21] LOG: database system was interrupted; last known up at 2021-03-11 16:16:19 UTC
2021-03-13 11:32:00.242 UTC [21] LOG: database system was not properly shut down; automatic recovery in progress
2021-03-13 11:32:00.243 UTC [21] LOG: redo starts at 0/15C1270
2021-03-13 11:32:00.243 UTC [21] LOG: invalid record length at 0/15C12A8: wanted 24, got 0
2021-03-13 11:32:00.243 UTC [21] LOG: redo done at 0/15C1270
2021-03-13 11:32:00.247 UTC [8] LOG: database system is ready to accept connections
2021-03-13 20:33:10.424 UTC [31] LOG: could not receive data from client: Operation timed out
2021-03-13 20:33:10.424 UTC [29] LOG: could not receive data from client: Operation timed out
Does that means that database has corrupted? If so is there a way to recover it somehow? The container has been running for 3 years without a problem and suddenly this unexpected loss of database.
Thanks
Yes, the database was corrupted, but it was recovering by the automated recovery process. It looked like the db system started working since it sent this message: database system is ready to accept connections. This means that the logfile recovery was done properly (which doesn't mean that the database files are fully consistent).
When the database is abruptly shutdown, there is small chance for filelvel corruption as well, but the good news is that I don't see anything in the log, after the recovery that can suggest that this is the case, however, you need to have backup of the files.
The next log message could not receive data from client: Operation timed out is not related to recovery, it's due to the client application which had terminated without properly closing the connection.
Check more information on corruptions and reasons in Postgresql wiki.
If you depend on the data in the database, always keep backup. Easiest way is to use pg_dumpall. This will dump the data in plain text format as a series of SQL statements and you will be able to import the data on later versions of PostgreSQL.
So my recommendation, before you do anything else with it, STOP THE CONTAINER AND TAKE BACKUP OF THE FILES. The recovery is trial and error process, and you will need to have the fresh copy of the files to try different thing. After you do this, export the data with pg_dumpall. If this passes, you can resume normal operations of the database.
i have an old copy of my postgresql db folder (/var/lib/postgresql/9.5/main/) from my server. Now I want to get the data out of the files. So i copied the main folder to my local machine and changed the postgresql config (/etc/postgresql/9.5/main/postgresql.conf) to point to that directory. Also i changed the permission of the main directory to the user postgres. After restarting the postgresql service (sudo service postgresql restart) it doesn't really work.
What I'm doing wrong? (Yea I know, pg_dump is the preferred way, but in this way...)
So my question, does this even work?
Or is there a other way to get the data out of this?
everything is done on ubuntu 16.04.
Edit:
the log file after changing the postgresql.conf file to point to the new directory.
2017-10-13 06:15:43 CEST [968-1] LOG: database system was shut down at 2017-10-13 00:21:04 CEST
2017-10-13 06:15:43 CEST [968-2] LOG: MultiXact member wraparound protections are now enabled
2017-10-13 06:15:43 CEST [959-1] LOG: database system is ready to accept connections
2017-10-13 06:15:43 CEST [975-1] LOG: autovacuum launcher started
2017-10-13 06:15:43 CEST [983-1] [unknown]#[unknown] LOG: incomplete startup packet
2017-10-13 06:47:55 CEST [975-2] LOG: autovacuum launcher shutting down
2017-10-13 06:47:55 CEST [959-2] LOG: received smart shutdown request
2017-10-13 06:47:55 CEST [972-1] LOG: shutting down
2017-10-13 06:47:55 CEST [972-2] LOG: database system is shut down
2017-10-13 06:47:55 CEST [4667-1] FATAL: database files are incompatible with server
2017-10-13 06:47:55 CEST [4667-2] DETAIL: The database cluster was initialized without USE_FLOAT8_BYVAL but the server was compiled with USE_FLOAT8_BYVAL.
2017-10-13 06:47:55 CEST [4667-3] HINT: It looks like you need to recompile or initdb.
Ok that pointed me to this. The server is a armv7l, whereas the local machine is x86_64 (uname -m). So there is no chance to get the data out of it?
thx, Luc
If it's really true that your data directory is from an ARM7l system, and your local system is x86_64, you're going to have some difficulties.
The immediate error about USE_FLOAT8_BYVAL is because ARM7L is 32-bit, and cannot pass 64-bit floating point values (8 byte) by-value. Your 64-bit host can. But if you recompiled a custom postgres with USE_FLOAT8_BYVAL disabled you'd likely just run into other issues.
I suggest installing PostgreSQL on a matching ARM system to recover the data. Data directories for PostgreSQL are not portable across architectures (for performance reasons).
If you do not have access to the ARM system anymore, an emulator like qemu should be able to help you.
Otherwise, maybe you can compile a modified PostgreSQL (probably starting with 32-bit x86) that can read the data-dir, with appropriate configure options etc. I've never needed to try this.
My application is deployed on remote application server (Linux) and from there it tries to connect to DB server (PostgreSql 9.4) which is again present on another remote server (Linux). I send a long message to app server through JMS and this message processing takes many hours to get processed. But unfortunately I am getting facing some issues of performance with DB server. When I see postgresql.log file I can see the below errors/warning:
< 2017-05-05 09:18:00.676 CEST >LOG: could not receive data from client: Connection timed out
< 2017-05-05 13:38:33.704 CEST >LOG: incomplete startup packet
< 2017-05-05 13:42:29.158 CEST >LOG: unexpected EOF on client connection with an open transaction
< 2017-05-05 13:50:49.163 CEST >LOG: checkpoints are occurring too frequently (1 second apart)
< 2017-05-05 13:50:49.163 CEST >HINT: Consider increasing the configuration parameter "checkpoint_segments".
Do I need to update something in postgresql.conf file. Can somebody please advise what should I follow to avoid these errors?
The database in use is Postgres database V8.Every one hour there is a server connection error.The server gets disconnected and needs to be re connected again.
Please find below the log of the error and let know on a solution to resolve this error
2012-01-05 13:28:52 CEST LOG: server process (PID 6128) was terminated by exception 0xC0000017
2012-01-05 13:28:52 CEST HINT: See C include file "ntstatus.h" for a description of the hexadecimal value.
2012-01-05 13:28:52 CEST LOG: terminating any other active server processes
2012-01-05 13:28:52 CEST WARNING: terminating connection because of crash of another server process
2012-01-05 13:28:52 CEST DETAIL:The postmaster has commanded this server process to roll back the current transaction and exit, because another server process exited abnormally and possibly corrupted shared memory.
2012-01-05 13:28:52 CEST HINT:In a moment you should be able to reconnect to the database and repeat your command.
2012-01-05 13:28:52 CEST WARNING:terminating connection because of crash of another server process
2012-01-05 13:28:52 CEST DETAIL:The postmaster has commanded this server process to roll back the current transaction and exit, because another server process exited abnormally and possibly corrupted shared memory
Thanks in Advance
Apparently that status is STATUS_NO_MEMORY, so look at your server memory setup (shared_buffers, work_mem et al) and monitor the memory usage on the machine around the time it crashes (if it is regular). Does it always coincide with some sort of scheduled task?