Error

Error Code: 584

SAP S/4HANA Error 584: LOB Data Stream Exhausted

📦 SAP S/4HANA

📋

Description

Error 584, 'ERR_API_NO_MORE_LOB_DATA', indicates that an application or API call attempted to read or process Large Object (LOB) data beyond its available extent. This typically occurs when an operation expects more data from a stream but has reached its end, or if the data itself is incomplete or truncated.

💬

Error Message

ERR_API_NO_MORE_LOB_DATA

🔍

Known Causes

4 known causes

⚠️

API Read Beyond End of LOB Stream

An API or application attempted to read data from a Large Object (LOB) beyond the actual end of the available data stream, leading to an unexpected halt.

⚠️

Incorrect LOB Data Handling

The client application or integration processing the LOB data did not properly manage the end-of-stream condition or expected more data than was provided.

⚠️

Truncated or Incomplete LOB Data

The Large Object (LOB) data itself might have been truncated, corrupted, or incompletely transferred, causing the system to unexpectedly run out of data.

⚠️

LOB Data Processing Limit Reached

A system or API configuration limit for the total amount of Large Object (LOB) data that can be processed in a single operation or session was encountered.

🛠️

Solutions

3 solutions available

1. Increase LOB Segment Size in Database medium

Adjusting the maximum size of LOB segments in the underlying database can resolve the 'LOB Data Stream Exhausted' error.

Identify the database type and version. This solution is most common for SAP HANA, Oracle, and SQL Server.

text

For SAP HANA, LOB data is typically managed within table spaces. You need to ensure the table space allocated for LOBs has sufficient space. This often involves increasing the size of the data volumes or adding new ones. Consult SAP HANA administration guides for specific commands related to table space management.

text

For Oracle, you might need to adjust the `MAX_SIZE` parameter for LOB segments or increase the size of the tablespace containing the LOBs. This can be done using `ALTER TABLE ... MOVE LOB (...)` or by resizing datafiles.

SQL
ALTER TABLE <schema>.<table> MOVE LOB(<lob_column>) STORE AS SECUREFILE (TABLESPACE <tablespace_name> ENABLE STORAGE IN ROW CHUNK 16K RETENTION NOCACHE LOGGING MAXSIZE UNLIMITED);

-- Or resize datafile if tablespace is autoextend disabled
ALTER DATABASE DATAFILE '<datafile_path>' RESIZE <new_size>G;

For SQL Server, LOB data is stored in filegroups. Ensure the filegroup containing the LOB data has enough free space. You may need to add a new file to the filegroup or increase the size of existing data files.

SQL
ALTER DATABASE <database_name> MODIFY FILE (NAME = N'<logical_file_name>', SIZE = <new_size>MB);

-- Or add a new file
ALTER DATABASE <database_name> ADD FILE (NAME = N'<new_logical_file_name>', FILENAME = N'<file_path>', SIZE = <initial_size>MB, FILEGROWTH = <growth_increment>MB);

After making database-level changes, restart the relevant SAP S/4HANA application servers and any affected background jobs or processes to ensure they pick up the new configuration.

text

2. Optimize LOB Data Handling in Application Logic advanced

Review and optimize how LOB data is processed within the SAP S/4HANA application to avoid excessively large data streams.

Analyze the specific SAP S/4HANA transaction or process that is triggering the error. Use SAP's ABAP debugging tools (SE80, SE38) to trace the execution flow.

text

Identify the ABAP programs or function modules that are retrieving, manipulating, or storing LOB data. Pay close attention to how LOB data is read (e.g., `READ DATASET`, `CL_SQL_STATEMENT` for native SQL).

text

If large LOBs are being read in their entirety, consider implementing chunked reading or processing. Instead of fetching the entire LOB into memory, read and process it in smaller, manageable segments. This is particularly relevant for large documents, images, or other binary data.

ABAP (Conceptual Example)
DATA: lo_lob_data TYPE xstring.
DATA: lv_offset TYPE i.
DATA: lv_length TYPE i.

WHILE TRUE.
  " Read a chunk of LOB data
  CALL METHOD <lob_object>->get_chunk( 
    EXPORTING 
      offset = lv_offset 
      length = lv_length 
    IMPORTING 
      data   = lo_lob_data 
  ).

  IF sy-subrc <> 0 OR lo_lob_data IS INITIAL.
    EXIT.
  ENDIF.

  " Process the chunk (e.g., write to a file, transform)
  " ...

  lv_offset = lv_offset + lv_length.
ENDWHILE.

If the LOB data is being generated or modified, ensure that intermediate data is not accumulating unnecessarily. Optimize the logic to write the LOB data to its final destination as it's being created, rather than holding it in memory for extended periods.

text

If the LOB is stored in a database table, examine the ABAP code that inserts or updates this column. Ensure that the entire LOB is not being passed as a single, large parameter if it can be streamed or processed incrementally.

text

Test thoroughly after implementing any application logic changes to confirm the error is resolved and that data integrity is maintained.

text

3. Monitor and Tune Database Parameters Related to LOBs advanced

Adjusting specific database parameters that govern LOB handling can alleviate the 'LOB Data Stream Exhausted' error.

Consult SAP Notes and the specific database vendor documentation for recommended parameters related to LOB storage and retrieval. The exact parameters will vary significantly between HANA, Oracle, and SQL Server.

text

For SAP HANA, review parameters related to the memory allocated for LOB processing and the default chunk sizes used for LOBs. Parameters like `lob_max_size` might be relevant, though often LOB handling is more dynamic. Focus on ensuring sufficient memory is available for the database instance.

text

For Oracle, parameters like `DB_FILE_MULTIBLOCK_READ_COUNT` (though less directly related to LOB exhaustion, it impacts I/O performance), and settings related to `LOB_READ_CHUNK` or `LOB_WRITE_CHUNK` might be tunable. Also, ensure `UNDO_TABLESPACE` is adequately sized.

SQL
-- Check current parameters
SHOW PARAMETER lob_read_chunk;
SHOW PARAMETER lob_write_chunk;

-- Example of altering a parameter (use with extreme caution and testing)
-- ALTER SYSTEM SET lob_read_chunk = <new_value> SCOPE=BOTH;

For SQL Server, consider settings related to buffer pool and memory management. While there isn't a direct parameter for 'LOB stream size', ensuring sufficient memory is available for SQL Server to process large objects is crucial. Review `max server memory` and `min server memory` configurations.

SQL
-- Check current memory configuration
EXEC sp_configure 'show advanced options', 1;
RECONFIGURE;
EXEC sp_configure 'max server memory (MB)';
EXEC sp_configure 'min server memory (MB)';

-- Example of altering memory (use with caution)
-- EXEC sp_configure 'max server memory (MB)', <new_value_in_MB>;
-- RECONFIGURE;

After modifying any database parameters, perform a full database restart and then restart the SAP S/4HANA application servers. Test the affected functionality to confirm the error is resolved.

text

🔗

Related Errors

5 related errors