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Description

This error indicates that an attempt was made to perform Large Object Binary (LOB) streaming operations while the database connection is configured in auto-commit mode. LOB streaming requires explicit transaction control to ensure data integrity and proper resource management, which is incompatible with auto-commit behavior.

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Error Message

ERR_API_LOB_STREAM_NOT_PERMITTED

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Known Causes

4 known causes

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Application Logic in Auto-Commit

The application code or API call is attempting LOB streaming without explicitly managing transactions, leading to the system defaulting to auto-commit mode.

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Database Driver/Connector Misconfiguration

The database driver or connector used by SAP S/4HANA or an integrated system is configured to enforce auto-commit for all operations, overriding application-level transaction settings.

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Inappropriate API Usage

An API or BAPI (Business Application Programming Interface) is being invoked in a way that implicitly triggers LOB streaming while the underlying transaction context is set to auto-commit.

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External System Integration Issues

When integrating with external systems, their data transfer mechanisms might attempt LOB streaming without proper transaction handling compatible with SAP S/4HANA's requirements.

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Solutions

3 solutions available

1. Disable LOB Streaming for Specific Tables medium

Temporarily disable LOB streaming for tables experiencing the error.

1

Identify the specific table(s) causing the ERR_API_LOB_STREAM_NOT_PERMITTED error. This usually requires analyzing application logs or debugging the problematic transaction.

2

Access the SAP HANA database using a SQL client (e.g., SAP HANA Studio, hdbsql).

hdbsql -n <host>:<port> -u <user> -p <password>

3

Execute the following SQL statement to disable LOB streaming for the identified table. Replace `<schema_name>` and `<table_name>` with the actual names.

ALTER TABLE "<schema_name>"."<table_name>" LOB_STREAMING OFF;

4

Verify the change by querying the table definition. LOB_STREAMING should now show 'OFF'.

SELECT TABLE_NAME, LOB_STREAMING FROM "SYS"."TABLES" WHERE SCHEMA_NAME = '<schema_name>' AND TABLE_NAME = '<table_name>';

5

Restart the relevant SAP S/4HANA application services or the entire system if the error persists after disabling LOB streaming for all identified tables. This ensures the changes are fully effective.

2. Review and Adjust Application Logic advanced

Modify the application code to avoid invalid LOB operations that trigger the error.

1

Analyze the SAP S/4HANA application code that performs LOB operations on the affected tables. Focus on transactions or processes that involve large object (LOB) data types (e.g., BLOB, CLOB).

2

Look for instances where LOB streaming might be implicitly enabled or where the application is attempting to perform operations that are not compatible with the current LOB streaming configuration.

3

If the application logic is attempting to commit a transaction while a LOB stream is still open, this is a common cause. Ensure that LOB data is fully written and the stream is properly closed before committing the transaction.

4

Consult SAP Notes and documentation related to LOB handling in S/4HANA and HANA Database to understand best practices and potential pitfalls. Specific SAP Notes might provide guidance on how to correctly handle LOBs within certain application modules.

5

If necessary, refactor the application code to use alternative LOB handling methods or to ensure proper stream management. This might involve using different API calls or adjusting the order of operations.

3. Update SAP S/4HANA and HANA Database medium

Apply the latest patches and updates to resolve known bugs related to LOB streaming.

1

Check for available SAP Notes related to SAP S/4HANA and SAP HANA Database that address ERR_API_LOB_STREAM_NOT_PERMITTED or issues with LOB streaming. Search SAP Support Portal using the error code and relevant keywords.

2

Plan and execute the application of relevant Support Packages (SPs) or Enhancement Packages (EPs) for your SAP S/4HANA system. This is typically done through transaction SPAM/SAINT.

3

Plan and execute the update of your SAP HANA Database to the latest revision or a recommended revision as per SAP's guidelines. This usually involves using the SAP HANA Lifecycle Management tools or command-line utilities.

4

Thoroughly test the affected functionalities after applying the updates to ensure the error is resolved and no new issues have been introduced.

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Related Errors

5 related errors

SAP S/4HANA Error 596: LOB Streaming Auto-Commit