General error 8 attempt to write a readonly database sqlite

Thu, 16 Jan

General error 8 attempt to write a readonly database sqlite

I have a read-only database connection. I open the connection like this: I read data from the database using db.

The table I'm reading from is a standard SQLite table: There is a separate writeable connection open to the same database at the same time, owned by a WebView.

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I expect this may prove to be the ultimate cause of the problem, but I'd like to understand in detail why a read-only connection would interfere with a separate writeable connection. I am well aware that the general advice is to use a single connection to the database, but since the writeable connection is owned by the WebView, I don't have easy access to it from the Java code.

Solved by changing it to a writeable database connection. The clue was in the documentation for the error code: During development, I am frequently interrupting the currently-running app to install and run a new version. This causes the currently-running app to be force-stopped by the system. If the Javascript code in the WebView is in the middle of writing to the database via its separate writeable connection when the app is nuked, then a hot journal will be left behind.

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When the new version of the app starts up, the read-only database connection in the native Java code is opened. When this connection spots the journal, it tries to roll back the journal.

And because it's a read-only connection, it fails. This fits with the crash being observed immediately on startup after I've made a change.

The correct fix is therefore to make the Java connection a writeable connection. This connection never attempts a write during normal operation, but it must write when recovering from a previous interrupted write through the WebView's writeable connection.SQLite When running my program to query the iPod library of my iPhone, I get the following output in the console: CPSqliteStatementPerform: attempt to write a readonly database for UPDATE regardbouddhiste.com_container SET orig_date_modified = (SELECT date_modified FROM container WHERE pid=container_pid) WHERE orig_date_modified=0.

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general error 8 attempt to write a readonly database sqlite

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