According to the sqlite FAQs http://www.sqlite.org/faq.html#q5

"Multiple processes can have the same database open at the same time. 
Multiple processes can be doing a SELECT at the same time. But only one 
process can be making changes to the database at any moment in time, 
however. "

On Monday, 14 May 2012 13:30:33 UTC+1, Ross Peoples wrote:
>
> I don't think you are supposed to open more than one connection to a 
> SQLite database at a time. It is file-based and doesn't have 
> multi-connection abilities like other databases like MySQL and PostgreSQL.
>
> On Monday, May 14, 2012 7:29:44 AM UTC-4, simon wrote:
>>
>> *In the following code I create a new table in db1. However when I open 
>> a second DAL connection to the same database the new table is not shown. 
>> Why is that?*
>> *
>> *
>> *db1 = DAL('sqlite://storage.sqlite', folder=dbfolder, auto_import=True)*
>> *print(db1.tables)*
>> *
>> *
>> *db1.executesql("DROP TABLE IF EXISTS test;")*
>> *print(db1._timings)*
>> *try:*
>> *    os.remove(dbfolder+"/test.table")*
>> *except:*
>> *    pass*
>> *    *
>> *db1.define_table('test', Field('testfield'), migrate='test.table')*
>> *db1.commit()*
>> *print(db1.tables)*
>> *
>> *
>> *db2 = DAL('sqlite://storage.sqlite', folder=dbfolder, auto_import=True)*
>> *print(db2.tables)*
>>
>

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