oracle - Does importing Django.db.Models affect the way cx_Oracle connects to other databases? -

-

i have django app uses cx_oracle backend using oracle db here in our office, uses cx_oracle directly, connect other remote oracle databases (our customers). of remote databases ( same few ) cannot connected after have created sub-class of django.db.models ( found out through trial-and-error )

if don't import models, or if change django db "oracle" else, works fine , can connect of remote databases. in django model code seems affecting cx_oracle in global way.

here's 1 clue have: used wireshark compare successful connection unsuccessful connection, , found unsuccessful connection attempt did include looked sort of "handshake" coming server initially, client sent lot of "alter session...nls_date_format", , many other "nls" settings, etc. after server never responds. nsl not there during successful attempts.

the confusing part of "bad" databases ( few have problem ) of alter session commands during connection. "good" databases don't those, after have imported models. have searched differences between "good" , "bad" databases ( nls settings, db settings, db version, etc ), same.

it huge mystery me. thinking moving actual django db on mysql, avoid problem -- crazy -- oracle shop, , have many oracle databases running.

so question this: base django.db.oracle code cx_oracle affects way connects? possibly doing? difference between "bad" databases , "good" ones? practically identical, , work fine except django. work fine cx_oracle, long never import models.

edit:

to fix problem, have switched django backend oracle mysql. installed mysql directly on web server, , migrated of data using django's "dumpdata" , "loaddata" tools. surprisingly easy. able connect of remote oracle databases no problem, because django no longer messes python/oracle driver. app faster too, because db on same box web server. recommend solution in situation.


Comments

Post a Comment

Popular posts from this blog

java - WrongTypeOfReturnValue exception thrown when unit testing using mockito -

-
my test list<person> mylist; @test public void testisvalidperson() { mylist = new arraylist<person>(); mylist.add(new person("tom")); when(persondao.get(person)).thenreturn(mylist); when((persondao.get(person)).isempty()).thenreturn(false);//------exception thrown boolean result = service.isvalid("tom"); assertfalse(result); } method tested: public boolean isvalid(string person){ persondao = new persondao(); person personobj = new person(person); return (persondao.get(person).isempty())?false : true; } exception thrown: org.mockito.exceptions.misusing.wrongtypeofreturnvalue: boolean cannot returned get() get() should return list *** if you're unsure why you're getting above error read on. due nature of syntax above problem might occur because: 1. exception *might* occur in wrongly written multi-threaded tests. please refer mockito faq on limitations of concurrency testing. 2. sp
Read more

php - Magento - Deleted Base url key -

-
i working on cleaning url: http://mydomain.com/shop/shop/deals i going through settings in configuration tab in admin panel on magento , change secure , unsecure base urls remove first base url "shop" web page read: http://mydomain.com/shop/deals so changed unsecure base urls mydomain.com/shop mydomain.com , secure 12.345.67.89/shop 12.345.67.89. wrong thing do. i cannot reload page or admin console. how access these files through ftp , change correctly there?? when make changes in admin panel changes made in database not in file. have make changes in database. 1.go database , select core_config_data table under table find web/unsecure/base_url , web/secure/base_url . make changes here. don't forget clear cache in var/cache folder
Read more

android - How to disable Button if EditText is empty ? -

-
i have edittext , button in application. when button clicked,the text entered in edittext added listview. i want disable button if edittext empty.how ? this code button click imagebutton imb=(imagebutton)findviewbyid(r.id.btn_send); imb.setonclicklistener(new onclicklistener() { @override public void onclick(view arg0) { edittext et = (edittext)findviewbyid(r.id.edittext1); string str = et.gettext().tostring(); web1.add(str); toast.maketext(shoutsingleprogram.this, "you entered...."+str, toast.length_short).show(); adapter1.notifydatasetchanged(); et.settext(""); } }); } how can ? edittext1.addtextchangedlistener(new textwatcher() { @override public void ontextchanged(charsequence s, int start, int before, in
Read more