Windev 25 Dump Exclusive [exclusive] (2025)

You have 200,000 ledger entries and 5,000 account records. You need to freeze everything.

| Error Message | Likely Cause | Solution | | :--- | :--- | :--- | | File already opened in exclusive access | Another user or process already locked the file. | Close all other connections; avoid dumping during replication. | | The lock request times out | Too many active writes; dump cannot get exclusive lock. | Increase timeout with hWait ; reschedule for later. | | Insufficient permissions to lock the file | WinDev 25 process lacks OS-level file permissions. | Run your application as Administrator or grant full control to the HFSQL directory. | | The dump file is corrupted | Disk error or interruption during exclusive dump. | Run HCheck on source file; change destination disk. | Imagine you are writing a WinDev 25 accounting module. The law requires a perfect snapshot of the general ledger at month-end for auditors. This is the quintessential use case for dump exclusive . windev 25 dump exclusive

// Syntax: HDump(File name, Destination file, [<Options>]) // Returns: True if successful, False otherwise. RESULT = HDump("CUSTOMER", "C:\Backups\Customer_Dump_2025.wdb", hExclusive) IF RESULT = False THEN Error("Dump failed: " + HErrorInfo()) END You have 200,000 ledger entries and 5,000 account records

BroadcastMessage("AUDIT_LOCK_END") Info("Month-end backup complete. Hash recorded.") ELSE BroadcastMessage("AUDIT_LOCK_CANCEL") Error("Month-end backup failed. Contact IT immediately. Error: " + HErrorInfo()) END The "Windev 25 dump exclusive" feature is a double-edged sword. On one edge, it offers the sharpest, most reliable point-in-time recovery for HFSQL databases, ensuring that your restored data maintains absolute referential integrity. On the other edge, it can completely freeze your application, frustrating users and potentially causing automated processes to fail. | Close all other connections; avoid dumping during

// Step 3: Perform exclusive dump on the entire accounting directory IF HBackupDatabase("C:\AccountingData", "D:\AuditBackups\GL_" + DateToString(CurrentDate()) + ".wdb", hExclusive + hForceFileLock) THEN // Step 4: Record the checksum for audit trail Hash = HashFile("D:\AuditBackups\GL_" + DateToString(CurrentDate()) + ".wdb", hashMD5) HAdd(AUDIT_TRAIL, "BackupPath", "Hash", Hash, "BackupTime", CurrentTime())

Use dump exclusive for critical financial, inventory, or transactional data. Use standard dump for static lookup tables or logs. Part 4: How to Implement "Dump Exclusive" in WinDev 25 Code You won't find a button labeled "Dump Exclusive" in the WinDev 25 ribbon by default. You must invoke it programmatically using the HDump function or the HBackup function. Method 1: The HDump Function The most direct way to perform an exclusive dump is via HDump with the hExclusive constant.