Hi,
I referred the link http://www.sqlite.org/cvstrac/tktview?tn=2829
it is slightly related to it but the temporary files are created while
running VACUUM command.
---------------------------------------------------------------
Ticket 2829:
This patch seems to fix it (added: SQLITE_OPEN_DELETEONCLOSE):
if( flags & (SQLITE_OPEN_TEMP_DB | SQLITE_OPEN_TEMP_JOURNAL
- | SQLITE_OPEN_SUBJOURNAL) ){
+ | SQLITE_OPEN_SUBJOURNAL | SQLITE_OPEN_DELETEONCLOSE) ){
------------------------------------------------------------------------------
The temp files were created in the below call sequence:
-----------------------------------------------------------------
62 otherOsOpen() sqlite3.c:123900 0x3afe25bd
61 sqlite3OsOpen() sqlite3.c:15280 0x3af550d0
60 pagerOpentemp() sqlite3.c:39431 0x3af62e70
59 pager_write_pagelist() sqlite3.c:40030 0x3af63a68
58 sqlite3PagerCommitPhaseOne() sqlite3.c:41884 0x3af669ff
57 sqlite3BtreeCommitPhaseOne() sqlite3.c:48993 0x3af72665
56 sqlite3BtreeCommit() sqlite3.c:49083 0x3af728e6
55 sqlite3RunVacuum() sqlite3.c:94735 0x3afcce29
54 sqlite3VdbeExec() sqlite3.c:66384 0x3af961e4
53 sqlite3Step() sqlite3.c:59380 0x3af87b34
52 sqlite3_step() sqlite3.c:59444 0x3af87d6e
51 sqlite3_exec() sqlite3.c:84701 0x3afb86b9
------------------------------------------------------------------
Basically there 2 problems associated when i run VACUUM command.
Problem 1. Running VACUUM leaves 3 temporary files in the temp directory
which are not deleted when main DB is closed.
Problem 2. Upon applying VACUUM command on say main DB file MyDb.db , and
closing the main DB connection, the size of the main DB file MyDb.db does
not change where as one of the temp file(etilqs_*) will actually contain the
reduced size of the same data as of main DB file.
I am not sure if this is the expected behaviour or there is some bug in the
flow.
Please let me know if there is a solution to resolve this issue.
Thanks,
Sudha
On Wed, Feb 23, 2011 at 5:52 PM, Simon Slavin <slav...@bigfraud.org> wrote:
>
> On 23 Feb 2011, at 6:11am, Sudha Venkatareddy wrote:
>
> > *Actual output: MyDb.db remains size 23KB(size not changes from original)
> > and creates temporary file etilqs_Hm4RUi6JPXcMZ17 whose data is same as
> > MyDb.db but the size is reduced to 13KB*
>
> Your problem is probably related to
>
> http://www.sqlite.org/cvstrac/tktview?tn=2829
>
> . It's quite legitimate for your symptoms to occur while the database
> handle is still open but you should not be seeing those files after you have
> closed the connection to the database. Either you are not closing the
> database connection properly, or some part of the API you're using is not
> closing the database connection properly.
>
> I'm not familiar with how this problem manifests because I don't use
> Windows, so I'll leave it up to an expert to tell you if it needs fixing
> somehow.
>
> Simon.
> _______________________________________________
> sqlite-users mailing list
> sqlite-users@sqlite.org
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>
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