Error
Error Code:
2048
SAP S/4HANA Error 2048: Column Store Access Failure
Description
This error indicates a critical issue within the SAP HANA database's column store, which is fundamental for SAP S/4HANA operations. It typically occurs when the system attempts to access, process, or store data in column-based tables, impacting various business transactions and reports.
Error Message
ERR_CS: Column store error
Known Causes
4 known causesCorrupted Column Store Data
Underlying data files in the column store may have become corrupted due to hardware failures, system crashes, or improper shutdowns.
Insufficient System Resources
The SAP HANA database might be running out of memory or disk space, preventing it from processing column store operations efficiently.
Database Inconsistencies
Inconsistencies within the SAP HANA database schema or data structures can lead to failures when accessing column store tables.
Software Bug or Missing Patch
Known issues in the SAP HANA database software or missing critical patches can trigger column store errors in specific scenarios.
Solutions
3 solutions available1. Restart SAP HANA Database Instance easy
A simple restart can resolve transient column store issues.
1
Log in to the SAP HANA server as a user with administrative privileges.
2
Open a terminal or command prompt.
3
Execute the SAP HANA stop command.
HDB stop4
Wait for the instance to completely shut down. This can take several minutes.
5
Execute the SAP HANA start command.
HDB start6
Monitor the instance startup and check if the error persists.
2. Check and Rebuild Column Store Table Indexes medium
Corrupted or inconsistent column store indexes can cause this error.
1
Identify the specific table(s) causing the error. This information might be in the SAP application logs or the SAP HANA trace files (e.g., `indexserver_alert_<hostname>.trc`).
2
Connect to the SAP HANA database using SAP HANA Studio or a SQL client (e.g., hdbsql).
3
For each problematic table, check its column store index status. Replace `<schema_name>` and `<table_name>` with your actual values.
SELECT TABLE_NAME, COLUMN_COUNT, COLUMN_COUNT_IN_USE, VALID FROM "SYS"."TABLES" WHERE SCHEMA_NAME = '<schema_name>' AND TABLE_NAME = '<table_name>';4
If `VALID` is not 'TRUE' for the column store index, or if you suspect corruption, you can rebuild the index. This operation can be resource-intensive and may require a maintenance window.
ALTER TABLE "<schema_name>"."<table_name>" REBUILD COLUMN_TABLE_INDEX;5
After rebuilding, re-verify the index status using the query from step 3.
6
Test the application functionality that was previously failing.
3. Analyze SAP HANA Trace Files for Detailed Errors advanced
Deep dive into trace files to pinpoint the root cause of the column store failure.
1
Log in to the SAP HANA server.
2
Navigate to the SAP HANA trace directory. This is typically located under `$DIR_INSTANCE/trace`.
3
Examine the `indexserver_alert_<hostname>.trc` file for entries around the time the error occurred. Look for specific error messages related to column store operations.
4
Search for other relevant trace files, such as `indexserver_<pid>_<timestamp>.trc`, or any files containing `ERR_CS` or `Column store error`.
5
If the trace files indicate specific data corruption or missing components, you might need to consult SAP Notes or contact SAP Support for further analysis and potential data recovery procedures.
6
Based on the detailed error analysis, implement the recommended corrective actions, which could range from specific SQL commands to applying SAP patches.