Hi,
I am having issues when I need to translate a database that
already exists (adding a field). I added the field using SQLiteStudio and it
gives me the commands necessary to translate the database. When I employ these
in my program, I get an error that I do not know how to work around.
The sequence is this:
ALTER TABLE argusTable1 RENAME TO argus_temp_table
CREATE TABLE argusTable1 (tableID INTEGER PRIMARY KEY, newField INTEGER)
INSERT INTO argusTable1 (tableID) SELECT (screenInstanceID) FROM
argus_temp_table
DROP TABLE argus_temp_table
I run all 4 of these statements in separate sqlite3_exec
statements. The first 3 run fine with no issue. When I try doing the 4th one
I get a Table Locked error (6). If I loop to wait for it, it never returns.
As the problem is with the temporary table, I wouldn't think any place else in
my code would be causing this issue.
I have tried running this SQLiteStudio, running each statement
on its own, and there is no issue. Do not know what I am doing wrong.
Following are my Pragmas used:
PRAGMA synchronous = NORMAL
PRAGMA journal_mode = MEMORY
PRAGMA page_size = 2048
PRAGMA cache_size = 100000
PRAGMA temp_store = MEMORY
SQLite version 3.9.2 is what I am using.
Any assistance would be appreciated.
Andrew Stewart
Software Designer
Argus Control Systems Ltd.
Tel: (604) 536-9100 ext. 108
[email protected]<mailto:[email protected]>
#101 - 18445 53rd Avenue | Surrey BC | CANADA | V3S 7A4
(604) 538-3531 | (800) 667-2090 | Fax (604) 538-4728
www.arguscontrols.com<http://www.arguscontrols.com/>
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