ERROR_ALLOCATE_BUCKET - 602 (0x25A)
The bucket array must be grown. Retry transaction after doing so.
Updated: Feb 21, 2026
Technical Background
The ERROR_ALLOCATE_BUCKET error code, with the numeric value of 602 and the hexadecimal representation of 0x25A, is a specific Windows API error that indicates an internal mechanism requiring additional resources to be allocated. This error typically arises in scenarios where the system attempts to manage or access data structures known as buckets, which are often used for hash tables or similar data storage mechanisms.
Error Details
The ERROR_ALLOCATE_BUCKET error suggests that the bucket array associated with a particular operation needs to be expanded. This is a common requirement when dealing with dynamic data structures where the number of elements may exceed the current capacity of the allocated memory.
Common Causes
- Exceeding Limits: The operation attempted has resulted in an attempt to allocate more buckets than currently available, necessitating an expansion of the bucket array.
- Dynamic Data Management: Operations that involve dynamic data management, such as adding a large number of elements or handling high concurrency, may trigger this error if the current capacity is insufficient.
Real-World Context
This error can occur in various contexts where Windows APIs manage internal structures. For example, it might be encountered when working with certain file system operations, network protocols, or database-like data management systems integrated into the operating system.
Is This Error Critical?
The criticality of this error depends on the specific operation and context. While the error itself is not inherently critical, failing to address it can lead to performance degradation or operational failures if the necessary resources are not allocated in a timely manner.
How to Diagnose
To diagnose ERROR_ALLOCATE_BUCKET, developers should:
- Review Operation Context: Ensure that the operation context supports dynamic growth and expansion of data structures.
- Validate Parameters: Check for any invalid or incorrect parameters that might be causing the error.
- Confirm Object Types: Verify that the correct object types are being used, as some operations may require specific bucket configurations.
How to Resolve
To resolve ERROR_ALLOCATE_BUCKET, developers should:
- Correct Parameter Usage: Ensure all parameters passed to the operation are valid and correctly configured for dynamic growth.
- Adjust Operation Context: Modify the context in which the operation is performed, ensuring that it can handle larger data sets or higher concurrency levels.
- Retry Transaction: After making necessary adjustments, retry the transaction. The system should automatically allocate the required resources upon successful retry.
Developer Notes
Developers working with Windows APIs should be aware of potential resource limitations and ensure their code is capable of handling dynamic growth scenarios. This includes proper error handling and retry mechanisms to manage such situations effectively.
Related Errors
ERROR_NO_SYSTEM_RESOURCES(896, 0x370): Indicates a general lack of system resources, which could be a precursor or consequence ofERROR_ALLOCATE_BUCKET.ERROR_INSUFFICIENT_BUFFER(122, 0x4E): Suggests that the buffer size is insufficient for the operation, possibly related to memory allocation issues.
FAQ
Q: What does ERROR_ALLOCATE_BUCKET mean?
A: It indicates that the bucket array associated with a particular operation needs to be expanded due to exceeding its current capacity.
Q: How can I prevent this error from occurring?
A: Ensure your operations are designed to handle dynamic growth and validate all parameters to avoid resource allocation issues.
Summary
The ERROR_ALLOCATE_BUCKET error code is a specific indication that the bucket array associated with an operation needs to be expanded. Developers should ensure their operations can dynamically manage resources and handle such errors gracefully by adjusting context or retrying transactions.