However, there is a different scenario because the SELECT statement is not considered to be completed until Sqlite3_reset() or Sqlite3_finalize() are called. The main reason behind it is the misconception of the users that if the Sqlite3_() returns the SQLITE_DONE value, the SELECT statement is finished. The database gets locked in a situation when you try to DROP or CREATE an index or table while SELECT statement is still in a pending state. ![]() When you use a table to write and on which the SELECT operations is previously activated.Some of the situations and scenarios under which there are chances of occurrence of error code 5 SQLite database is locked are as: Various scenarios of SQLite error database is locked The error message indicates that a similar operation can not be performed as there is an encounter with the transaction using the same database connection or a different database connection using shared cache. Usually, this error code appears whenever an SQLite user intends to perform two inappropriate transactions or operations in a database on the same data connection and on the same other details. It is one of the frequent errors.Ĭauses for SQLite Error Database is locked code 5 If you are an SQLite user, you must have come across the error Database is locked. SQLite is a database management system which is operated in C language programming library. You’ll get to know how to resolve this error using both manual and alternate methods. MessageBox.Facing SQLite database is locked error code 5? Having difficulties while performing operations or transactions in the database. If (check1.Checked = false & check2.Checked = false & check3.Checked = false) SQLiteDataReader read = comp.ExecuteReader(CommandBehavior.CloseConnection) SQLiteCommand comp = new SQLiteCommand(collect, Conexiune.getConnection()) String collect = "Select option1,option2,option3 from questions where `question`='" + SimulatorManager.Intrebare + "'" Private void button4_Click(object sender, EventArgs e) Using (SQLiteCommand cmd = new accounts set totalsim=totalsim+1 where username='" + SimulatorManager.Utilizator + "'", Conexiune.getConnection())) And I have to change only a value from a single row, don't understand why to use foreach loop. I tried with DataAdapter, with DataReader but it didn't work. I tried to close and reopen connection, than close is again, but with no succees. Well, is not about I give up, I'm sick of this update :)) I tried to change the code in so many ways, but without success. So start by using a DataAdapter instead of the DataReader: Why a foreach loop? Because a query of any form returns a number of rows - which may be zero (if there is no match), one (if there is only one), or more (if there is more than one value) - and it's alwasy good practice to not assume that it will return one and only one, even if your program logic says it will. And I have to change only a value from a single row, don't understand why to use foreach loop." ![]() ![]() "Well, is not about I give up, I'm sick of this update :)) I tried to change the code in so many ways, but without success. ![]() The best solution would be to dump the Reader, and load a DataTable via a DataAdapter instead, and then use the DataTable data to loop and do the UPDATE statements. You have the connection open to handle the reader in the outer while loop, and you are trying to UPDATE the same table from the same connection within that loop - these operations are incompatible, so you get a "Database is locked" error.
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