Re: [web2py] Re: ProgrammingError: (2014, Commands out of sync; you can't run this command now)
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This one is also quite common:
Traceback (most recent call last):
File /opt/web2py/gluon/main.py, line 475, in wsgibase
BaseAdapter.close_all_instances(BaseAdapter.rollback)
File /opt/web2py/gluon/sql.py, line 810, in close_all_instances
action(instance)
File /opt/web2py/gluon/sql.py, line 1393, in rollback
self._connection.rollback()
ProgrammingError: (2014, Commands out of sync; you can't run this
command now)
Yes, I have many queries also in try..except blocks. But it is really
hard to find what exactly is the root of problem because I did not
reveal any meaningful shape in the error occurencies. At least not yet. :(
D.
mdipierro wrote:
Has anybody else here had a similar problem?
massimo
On Nov 9, 11:29 am, David Zejda d...@atlas.cz wrote:
Hi :)
E.g. now the exception was raised by the web2py internal db
initialization routine:
28: db = SQLDB('mysql://myus:myp...@localhost:330h6/mydb', pool_size=10)
Traceback (most recent call last):
File /opt/web2py/gluon/restricted.py, line 188, in restricted
exec ccode in environment
File /opt/web2py/applications/myapp/compiled/models_db.py, line 28,
in module
File /opt/web2py/gluon/sql.py, line 978, in __init__
self._execute('SET FOREIGN_KEY_CHECKS=1;')
File /opt/web2py/gluon/sql.py, line 977, in lambda
self._execute = lambda *a, **b: self._cursor.execute(*a, **b)
File /var/lib/python-support/python2.5/MySQLdb/cursors.py, line 166,
in execute
self.errorhandler(self, exc, value)
File /var/lib/python-support/python2.5/MySQLdb/connections.py, line
35, in defaulterrorhandler
raise errorclass, errorvalue
ProgrammingError: (2014, Commands out of sync; you can't run this
command now)
I'm thinking about possibility to raise the size of my poll. But in the
past with higher poll I think I was receiving more OperationalError:
(2006, 'MySQL server has gone away'). Because I am referring to a live
server, I would prefer to avoid experiments which could make frequency
of db errors even worse :)
thanks wishing you a nice day..
David
mdipierro wrote:
I cannot say without looking at the code. MySQL has lots of
undocumented quirks about what you can do and what you cannot do
within one transaction.
Try add a db.commit() after each insert/unpdate/form.accepts/
crud.update/crud.select IF you do a select after that.
Do you have any try:...except in your controllers and db queries
inside?
On Nov 8, 2:57 am, David Zejda d...@atlas.cz wrote:
The MySQL error occurs quite often, several times every day. The app has
about 2 page views daily and heavily communicates with db (tens of
queries per request, in db I have about 100 tables). Currently I have
pool with size for 10 connections.
Meaning of the error message is described here:
http://dev.mysql.com/doc/refman/4.1/en/commands-out-of-sync.html
It seems that with MySQL statements on the same db connection have to be
exhausted one-by-one, never in parallel. Two statements returning data
to the process must be using separate DBConnections (possibly to the
same host/db). Multiple statements on the same connection are supported,
but only 1 may be in a state to 'fetch' data.
Traces for the errors look like this:
File /opt/web2py/gluon/sql.py, line 3378, in count
return self.select('count(*)')[0]._extra['count(*)']
File /opt/web2py/gluon/sql.py, line 3237, in select
rows = response(query)
File /opt/web2py/gluon/sql.py, line 3232, in response
db._execute(query)
File /opt/web2py/gluon/sql.py, line 977, in lambda
self._execute = lambda *a, **b: self._cursor.execute(*a, **b)
File /var/lib/python-support/python2.5/MySQLdb/cursors.py, line 166,
in execute
self.errorhandler(self, exc, value)
File /var/lib/python-support/python2.5/MySQLdb/connections.py, line
35, in defaulterrorhandler
raise errorclass, errorvalue
ProgrammingError: (2014, Commands out of sync; you can't run this
command now)
Or e.g.:
Traceback (most recent call last):
File /opt/web2py/gluon/main.py, line 475, in wsgibase
BaseAdapter.close_all_instances(BaseAdapter.rollback)
File /opt/web2py/gluon/sql.py, line 810, in close_all_instances
action(instance)
File /opt/web2py/gluon/sql.py, line 1393, in rollback
self._connection.rollback()
ProgrammingError: (2014, Commands out of sync; you can't run this
command now)
Do you have any tips how to aviod these errors?
Thanks!
- --
David Zejda, Open-IT cz
web development services
http://www.o-it.info
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[web2py] Re: ProgrammingError: (2014, Commands out of sync; you can't run this command now)
Here is a the problem. If you put queries in try... except you must
follow this pattern:
try:
... any db io ...
except:
db.rollback()
If you do not rollback any subsequent attempt to commit or access the
db again results in an error.
On Nov 10, 2:07 pm, David Zejda d...@atlas.cz wrote:
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Hash: SHA1
This one is also quite common:
Traceback (most recent call last):
File /opt/web2py/gluon/main.py, line 475, in wsgibase
BaseAdapter.close_all_instances(BaseAdapter.rollback)
File /opt/web2py/gluon/sql.py, line 810, in close_all_instances
action(instance)
File /opt/web2py/gluon/sql.py, line 1393, in rollback
self._connection.rollback()
ProgrammingError: (2014, Commands out of sync; you can't run this
command now)
Yes, I have many queries also in try..except blocks. But it is really
hard to find what exactly is the root of problem because I did not
reveal any meaningful shape in the error occurencies. At least not yet. :(
D.
mdipierro wrote:
Has anybody else here had a similar problem?
massimo
On Nov 9, 11:29 am, David Zejda d...@atlas.cz wrote:
Hi :)
E.g. now the exception was raised by the web2py internal db
initialization routine:
28: db = SQLDB('mysql://myus:myp...@localhost:330h6/mydb', pool_size=10)
Traceback (most recent call last):
File /opt/web2py/gluon/restricted.py, line 188, in restricted
exec ccode in environment
File /opt/web2py/applications/myapp/compiled/models_db.py, line 28,
in module
File /opt/web2py/gluon/sql.py, line 978, in __init__
self._execute('SET FOREIGN_KEY_CHECKS=1;')
File /opt/web2py/gluon/sql.py, line 977, in lambda
self._execute = lambda *a, **b: self._cursor.execute(*a, **b)
File /var/lib/python-support/python2.5/MySQLdb/cursors.py, line 166,
in execute
self.errorhandler(self, exc, value)
File /var/lib/python-support/python2.5/MySQLdb/connections.py, line
35, in defaulterrorhandler
raise errorclass, errorvalue
ProgrammingError: (2014, Commands out of sync; you can't run this
command now)
I'm thinking about possibility to raise the size of my poll. But in the
past with higher poll I think I was receiving more OperationalError:
(2006, 'MySQL server has gone away'). Because I am referring to a live
server, I would prefer to avoid experiments which could make frequency
of db errors even worse :)
thanks wishing you a nice day..
David
mdipierro wrote:
I cannot say without looking at the code. MySQL has lots of
undocumented quirks about what you can do and what you cannot do
within one transaction.
Try add a db.commit() after each insert/unpdate/form.accepts/
crud.update/crud.select IF you do a select after that.
Do you have any try:...except in your controllers and db queries
inside?
On Nov 8, 2:57 am, David Zejda d...@atlas.cz wrote:
The MySQL error occurs quite often, several times every day. The app has
about 2 page views daily and heavily communicates with db (tens of
queries per request, in db I have about 100 tables). Currently I have
pool with size for 10 connections.
Meaning of the error message is described here:
http://dev.mysql.com/doc/refman/4.1/en/commands-out-of-sync.html
It seems that with MySQL statements on the same db connection have to be
exhausted one-by-one, never in parallel. Two statements returning data
to the process must be using separate DBConnections (possibly to the
same host/db). Multiple statements on the same connection are supported,
but only 1 may be in a state to 'fetch' data.
Traces for the errors look like this:
File /opt/web2py/gluon/sql.py, line 3378, in count
return self.select('count(*)')[0]._extra['count(*)']
File /opt/web2py/gluon/sql.py, line 3237, in select
rows = response(query)
File /opt/web2py/gluon/sql.py, line 3232, in response
db._execute(query)
File /opt/web2py/gluon/sql.py, line 977, in lambda
self._execute = lambda *a, **b: self._cursor.execute(*a, **b)
File /var/lib/python-support/python2.5/MySQLdb/cursors.py, line 166,
in execute
self.errorhandler(self, exc, value)
File /var/lib/python-support/python2.5/MySQLdb/connections.py, line
35, in defaulterrorhandler
raise errorclass, errorvalue
ProgrammingError: (2014, Commands out of sync; you can't run this
command now)
Or e.g.:
Traceback (most recent call last):
File /opt/web2py/gluon/main.py, line 475, in wsgibase
BaseAdapter.close_all_instances(BaseAdapter.rollback)
File /opt/web2py/gluon/sql.py, line 810, in close_all_instances
action(instance)
File /opt/web2py/gluon/sql.py, line 1393, in rollback
self._connection.rollback()
ProgrammingError: (2014, Commands out of sync; you can't run this
command now)
Do you have any tips how to aviod these errors?
Thanks!
- --
David Zejda, Open-IT cz
web development serviceshttp://www.o-it.info
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Re: [web2py] Re: ProgrammingError: (2014, Commands out of sync; you can't run this command now)
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Hash: SHA1
Hi :)
E.g. now the exception was raised by the web2py internal db
initialization routine:
28: db = SQLDB('mysql://myus:myp...@localhost:330h6/mydb', pool_size=10)
Traceback (most recent call last):
File /opt/web2py/gluon/restricted.py, line 188, in restricted
exec ccode in environment
File /opt/web2py/applications/myapp/compiled/models_db.py, line 28,
in module
File /opt/web2py/gluon/sql.py, line 978, in __init__
self._execute('SET FOREIGN_KEY_CHECKS=1;')
File /opt/web2py/gluon/sql.py, line 977, in lambda
self._execute = lambda *a, **b: self._cursor.execute(*a, **b)
File /var/lib/python-support/python2.5/MySQLdb/cursors.py, line 166,
in execute
self.errorhandler(self, exc, value)
File /var/lib/python-support/python2.5/MySQLdb/connections.py, line
35, in defaulterrorhandler
raise errorclass, errorvalue
ProgrammingError: (2014, Commands out of sync; you can't run this
command now)
I'm thinking about possibility to raise the size of my poll. But in the
past with higher poll I think I was receiving more OperationalError:
(2006, 'MySQL server has gone away'). Because I am referring to a live
server, I would prefer to avoid experiments which could make frequency
of db errors even worse :)
thanks wishing you a nice day..
David
mdipierro wrote:
I cannot say without looking at the code. MySQL has lots of
undocumented quirks about what you can do and what you cannot do
within one transaction.
Try add a db.commit() after each insert/unpdate/form.accepts/
crud.update/crud.select IF you do a select after that.
Do you have any try:...except in your controllers and db queries
inside?
On Nov 8, 2:57 am, David Zejda d...@atlas.cz wrote:
The MySQL error occurs quite often, several times every day. The app has
about 2 page views daily and heavily communicates with db (tens of
queries per request, in db I have about 100 tables). Currently I have
pool with size for 10 connections.
Meaning of the error message is described here:
http://dev.mysql.com/doc/refman/4.1/en/commands-out-of-sync.html
It seems that with MySQL statements on the same db connection have to be
exhausted one-by-one, never in parallel. Two statements returning data
to the process must be using separate DBConnections (possibly to the
same host/db). Multiple statements on the same connection are supported,
but only 1 may be in a state to 'fetch' data.
Traces for the errors look like this:
File /opt/web2py/gluon/sql.py, line 3378, in count
return self.select('count(*)')[0]._extra['count(*)']
File /opt/web2py/gluon/sql.py, line 3237, in select
rows = response(query)
File /opt/web2py/gluon/sql.py, line 3232, in response
db._execute(query)
File /opt/web2py/gluon/sql.py, line 977, in lambda
self._execute = lambda *a, **b: self._cursor.execute(*a, **b)
File /var/lib/python-support/python2.5/MySQLdb/cursors.py, line 166,
in execute
self.errorhandler(self, exc, value)
File /var/lib/python-support/python2.5/MySQLdb/connections.py, line
35, in defaulterrorhandler
raise errorclass, errorvalue
ProgrammingError: (2014, Commands out of sync; you can't run this
command now)
Or e.g.:
Traceback (most recent call last):
File /opt/web2py/gluon/main.py, line 475, in wsgibase
BaseAdapter.close_all_instances(BaseAdapter.rollback)
File /opt/web2py/gluon/sql.py, line 810, in close_all_instances
action(instance)
File /opt/web2py/gluon/sql.py, line 1393, in rollback
self._connection.rollback()
ProgrammingError: (2014, Commands out of sync; you can't run this
command now)
Do you have any tips how to aviod these errors?
Thanks!
- --
David Zejda, Open-IT cz
web development services
http://www.o-it.info
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[web2py] Re: ProgrammingError: (2014, Commands out of sync; you can't run this command now)
I cannot say without looking at the code. MySQL has lots of
undocumented quirks about what you can do and what you cannot do
within one transaction.
Try add a db.commit() after each insert/unpdate/form.accepts/
crud.update/crud.select IF you do a select after that.
Do you have any try:...except in your controllers and db queries
inside?
On Nov 8, 2:57 am, David Zejda d...@atlas.cz wrote:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
The MySQL error occurs quite often, several times every day. The app has
about 2 page views daily and heavily communicates with db (tens of
queries per request, in db I have about 100 tables). Currently I have
pool with size for 10 connections.
Meaning of the error message is described here:
http://dev.mysql.com/doc/refman/4.1/en/commands-out-of-sync.html
It seems that with MySQL statements on the same db connection have to be
exhausted one-by-one, never in parallel. Two statements returning data
to the process must be using separate DBConnections (possibly to the
same host/db). Multiple statements on the same connection are supported,
but only 1 may be in a state to 'fetch' data.
Traces for the errors look like this:
File /opt/web2py/gluon/sql.py, line 3378, in count
return self.select('count(*)')[0]._extra['count(*)']
File /opt/web2py/gluon/sql.py, line 3237, in select
rows = response(query)
File /opt/web2py/gluon/sql.py, line 3232, in response
db._execute(query)
File /opt/web2py/gluon/sql.py, line 977, in lambda
self._execute = lambda *a, **b: self._cursor.execute(*a, **b)
File /var/lib/python-support/python2.5/MySQLdb/cursors.py, line 166,
in execute
self.errorhandler(self, exc, value)
File /var/lib/python-support/python2.5/MySQLdb/connections.py, line
35, in defaulterrorhandler
raise errorclass, errorvalue
ProgrammingError: (2014, Commands out of sync; you can't run this
command now)
Or e.g.:
Traceback (most recent call last):
File /opt/web2py/gluon/main.py, line 475, in wsgibase
BaseAdapter.close_all_instances(BaseAdapter.rollback)
File /opt/web2py/gluon/sql.py, line 810, in close_all_instances
action(instance)
File /opt/web2py/gluon/sql.py, line 1393, in rollback
self._connection.rollback()
ProgrammingError: (2014, Commands out of sync; you can't run this
command now)
Do you have any tips how to aviod these errors?
Thanks!
- --
David Zejda
Sb rka na operaci pro p tiletou Vanessuhttp://www.tabang.eu
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