Recovering SQLite Databases Corrupted by “Disk Image Malformed” Error

Recovering SQLite Databases Corrupted by “Disk Image Malformed” Error

Understanding the "Disk Image Malformed" Error and Partial Data Accessibility via .dump The "disk image malformed" error (SQLite error code 11) occurs when the database engine detects structural inconsistencies in the SQLite file format. This error indicates that one or more database pages contain invalid data, violating the predefined schema or storage rules. A critical…

Recovering Data and Diagnosing Corruption in SQLite After “Malformed Disk Image” Error

Recovering Data and Diagnosing Corruption in SQLite After “Malformed Disk Image” Error

Understanding SQLite Database Corruption and Recovery Feasibility The "database disk image is malformed" error in SQLite indicates structural corruption within the database file. This error arises when SQLite’s internal consistency checks detect anomalies in the database’s storage format, such as invalid page headers, mismatched cell pointers, or broken b-tree structures. Corruption can occur at various…

SQLite REAL Constant Doubling Bug in Specific Integer Ranges

SQLite REAL Constant Doubling Bug in Specific Integer Ranges

Issue Overview: Erroneous Doubling of REAL Constants in 18446744073709550592~18446744073709551609 Range The core issue revolves around SQLite’s handling of integer literals exceeding 9223372036854775807 (2^63-1) when converted to 8-byte IEEE floating point numbers (REAL storage class). For integer values within specific ranges starting with prefixes like 18446744073709550592 (~1.8446744e+19), SQLite versions 3.47.0 through 3.48.0 produce doubled floating-point representations…

SQLite Documentation Licensing and Public Domain Dedication

SQLite Documentation Licensing and Public Domain Dedication

SQLite Documentation Licensing: Public Domain Dedication and Clarifications Issue Overview: SQLite Documentation Licensing Status and Public Domain Dedication The core issue revolves around the licensing status of SQLite documentation and whether it is explicitly dedicated to the public domain, similar to the SQLite source code. SQLite is widely known for its public domain dedication, which…