Which MIME types are related to file extension ".sqlite-shm"?
The .sqlite-shm file extension is associated with 2 MIME types:
application/vnd.sqlite3, application/x-sqlite3.
A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.
About .sqlite-shm Files
.SQLITE-SHM files are temporary shared memory files used by SQLite in Write-Ahead Logging (WAL) mode.
They hold in-memory data that coordinates concurrent database connections and manages locking between processes.
The file works with the main SQLite database and its corresponding .SQLITE-WAL file to keep data consistent during reads and writes.
MIME types like application/vnd.sqlite3 and application/x-sqlite3 confirm its role as part of SQLite’s database system.
- Purpose: Stores transient locking and synchronization data.
- Usage Cases: Automatically generated when SQLite operates in WAL mode.
- Software: Managed by applications using SQLite (e.g., DB Browser for SQLite, Firefox).
- Management: Handled internally; manual edits are not recommended.
Relationship between file extension and MIME type
A file extension is a suffix at the end of a filename that indicates what type of file it is. File extensions help both users and operating systems identify what application should be used to open the file.
File extensions are typically separated from the filename by a period (dot) and consist of 2-4 characters, though they can be longer. For example, in the filename "document.pdf", ".pdf" is the file extension.
File extensions are closely related to MIME types, as they both serve to identify the format of a file. However, while MIME types are used primarily by web browsers and servers, file extensions are used by operating systems and applications.
Associated MIME types
application/vnd.sqlite3, application/x-sqlite3
FAQs
What is a .sqlite-shm file?
A .sqlite-shm file is a temporary shared memory file created by SQLite when operating in Write-Ahead Logging (WAL) mode. It contains an index for the write-ahead log to help coordinate database access across multiple processes. It always exists alongside the main database file and a corresponding .sqlite-wal file.
Can I delete the .sqlite-shm file?
You should not delete this file while the application using the database is running, as it can cause database corruption. Under normal circumstances, the SQLite engine automatically deletes the file when the last connection to the database closes. If the file remains after the program closes, it may be safe to delete, but it is better to let the software handle it.
How do I open a .sqlite-shm file?
You cannot open or view this file directly because it contains binary shared memory data used internally by the database engine. To view the actual data, you must open the main .sqlite or .db file using software like DB Browser for SQLite. The application will automatically utilize the .sqlite-shm file if it is present.
Why does the .sqlite-shm file keep reappearing?
The file reappears because the application accessing the database is configured to use WAL mode for better performance and concurrency. Every time the software (such as Firefox, Chrome, or Skype) opens the database, it generates this file to manage file locking. This is normal behavior and indicates the software is working correctly.
Can I convert a .sqlite-shm file to CSV or Excel?
No, you cannot convert this specific file to other formats because it does not contain the actual database records. To export data to CSV or Excel, you must open the primary database file and use the export function within your database management tool.
Is the .sqlite-shm file a virus?
No, the .sqlite-shm file is a legitimate system file generated by trusted applications that use SQLite databases. However, like any file, ensure it is located in a directory associated with installed software. For technical details on the associated formats, you can check MIME types like application/vnd.sqlite3 on mime-type.com.
General FAQ
What is a MIME type?
A MIME (Multipurpose Internet Mail Extensions) type is a standard that indicates the nature and format of a document, file, or assortment of bytes. MIME types are defined and standardized in IETF's RFC 6838.
MIME types are important because they help browsers and servers understand how to process a file. When a browser receives a file from a server, it uses the MIME type to determine how to display or handle the content, whether it's an image to display, a PDF to open in a viewer, or a video to play.
MIME types consist of a type and a subtype, separated by a slash (e.g., text/html, image/jpeg, application/pdf). Some MIME types also include optional parameters.
How do I find the MIME type for a file?
You can check the file extension or use a file identification tool such as file --mime-type on the command line. Many programming languages also provide libraries to detect MIME types.
Why can one extension have multiple MIME types?
Different programs and historical usage may assign various MIME identifiers to the same file format. Listing them together helps maintain compatibility across tools.