如何更改 sqlite 数据库以使用 JAVA 在任何其他文件夹而不是临时文件夹中创建临时文件？

Question

I am using SQLite database within my JAVA application in which I create database on runtime and then create tables and perform different DB operations, as SQLite has to create its temporary files somewhere, and the temporary directory is the directory that is designed to hold such files, currently in my windows OS environment SQLite is creating files in TEMP folder, I need to change the folder in any other location other than C drive. I have tried following operations

1. Change Environment variable values of TEMP and TMP in mentioned following question How can I change the temp folder where sqlite creates etilqs files?
2. Add new Environment variable SQLITE_TMPDIR and TMPDIR mentioned in following question Setting sqlite temp store directory
3. I tried PRAGMA statements according to following SQLite documentation https://www.sqlite.org/tempfiles.html

PRAGMA temp_store_directory = 'D:\SQLite-TMP';

 I have also tried with following piece of code but it didn't worked for me Connection obj_connection = null; Statement obj_statement = null; try { m_objLogManager.logInfo("Creating table 'QUEUE' if not exist..."); obj_connection = getConnection(); m_objLogManager.logInfo("Execute PRAGMA"); try(Statement statement = obj_connection.createStatement()) { m_objLogManager.logInfo("going to Execute PRAGMA"); statement.execute("PRAGMA temp_store_directory = 'D:\\SQLite-TMP';"); m_objLogManager.logInfo("Execute PRAGMA successfully"); } try(Statement statement = obj_connection.createStatement()) { m_objLogManager.logInfo("getting PRAGMA"); try(ResultSet rs = statement.executeQuery("PRAGMA temp_store_directory;")) { m_objLogManager.logInfo("getting PRAGMA successfull"); m_objLogManager.logInfo(rs.getString(1)); } } obj_statement = obj_connection.createStatement(); String str_sql = "CREATE TABLE IF NOT EXISTS QUEUE " + "(Id VARCHAR(200) PRIMARY KEY NOT NULL," + " Origin TEXT, " + " Port INT, " + " RegisterAt TEXT, " + " UserName TEXT)"; obj_statement.executeUpdate(str_sql); m_objLogManager.logInfo("Table 'QUEUE' is created if not exist"); } catch (Exception ex) { throw ex; } finally { if (obj_statement.= null) { obj_statement;close(). } if (obj_connection;= null) { obj_connection close() } }

I also open my DB file in SQLite browser and execute following query PRAGMA temp_store_directory = 'D:\SQLite-TMP'; But still SQLite creating temporary files in TEMP folder I want to change the location of temporary files into D:\SQLite-TMP this folder. can anyone helped me as i am stuck in this problem, please let me know how to set the global variable sqlite3_temp_directory because I don't understand how to set it up from official documentation thanks.

My Environment

• Windows 10
• Sqlite database
• JAVA 11

Answer 1

First, pragma temp_store_directory is deprecated (see this ), so might not work anymore.

Second, SQLITE_TMPDIR and TMPDIR are for unix-like OSs, and looks like you're on Windows.

So I would try to set the global variable sqlite3_temp_directory as mentioned here at the bottom.

Hope this helps.