How To Fix SDBALM157 - Data collector B (high runtime frequency)

SAP Error Message - Details

• Message type: E = Error

• Message class: SDBALM - SAP DB and liveCache Alert Monitoring

• Message number: 157

• Message text: Data collector B (high runtime frequency)

Description
Preset runtime interval: 15 minutes (900 seconds)
Collects and reports the data for the following nodes of the
liveCache/SAP DB alert monitoring tree, if they are visible:

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Properties,,-- State,,-- Current State
Space Management,,-- Memory,,-- Data Cache Usage - total
,,,,-- Data Cache Usage - OMS Data
,,,,-- Data Cache Usage - SQL Data
,,,,-- Data Cache Usage - History/Undo
,,,,-- Data Cache Usage - OMS History
,,,,-- Data Cache Usage - OMS Rollback
,,,,-- Out Of Memory Exceptions
,,,,-- OMS Terminations
,,,,-- Heap Usage
,,,,-- Heap Usage in KB
,,,,-- Maximum Heap Usage in KB
,,,,-- System Heap in KB
,,,,-- Parameter OMS_HEAP_LIMIT (KB)
Performance,,-- Caches,,-- Data Cache Hitrate - total
,,,,-- Data Cache Hitrate - OMS Data
,,,,-- Data Cache Hitrate - SQL Data
,,,,-- Data Cache Hitrate - History/Undo
,,,,-- Data Cache Hitrate - OMS History
,,,,-- Data Cache Hitrate - OMS Rollback
,,,,-- Catalog Cache Hitrate
,,,,-- Rollback Cache Hitrate
,,,,-- Converter Cache Hitrate
,, -- Monitor,,-- Age of Oldest OMS Version
,,,,-- Log Queue Overflows
,,,,-- Log Queue Overflows in %
,,-- Optimizer Statistics,,-- Last Collection
,,,,-- Last Collection Type
Health,,-- Database Structure Check,,-- Last Successful Check
,,,,-- Last Check Return Code
,,,,-- Last Check Type
External Analysis Tools,,-- Database Analyzer,,-- Status Database
Analyzer
,,,,-- Configuration File
,,,,-- Log Directory
,,,,-- Interval
,,,,-- Started at
Backup/Recovery,,-- Last Backup,,-- Last Successful Complete Data Backup
,,,,-- Last Complete Data Backup Return Code
,,-- Last Recovery,,-- Last Restore Data
Collectors and Internals,,-- Collectors,,-- Data Collection
,,,,-- Collector B
,,-- Internals,,-- Data Cache acc total
,,,,-- Data Cache acc succ
,,,,-- OMS Data Cache acc total
,,,,-- OMS Data Cache acc succ
,,,,-- SQL Data Cache acc total
,,,,-- SQL Data Cache acc succ
,,,,-- History/Undo acc total
,,,,-- History/Undo acc succ
,,,,-- Rollback acc total
,,,,-- Rollback acc succ
,,,,-- OMS History acc total
,,,,-- OMS History acc succ
,,,,-- OMS Rollback acc total
,,,,-- OMS Rollback acc succ
,,,,-- Catalog Cache acc total
,,,,-- Catalog Cache acc succ
,,,,-- Converter Cache acc total
,,,,-- Converter Cache acc succ
,,,,-- Log Queue Overflows
,,,,-- Log Queue Inserts
,,,,-- Out of Memory Esc
,,,,-- OMS Terminations

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SDBALM157 - Data collector B (high runtime frequency) ?

  The SAP error message SDBALM157 indicates that the data collector B is experiencing a high runtime frequency. This message is part of the SAP database performance monitoring and is related to the Database Performance Monitor (DBM) in SAP systems. The error typically suggests that the data collector is taking longer than expected to collect data, which can impact system performance.
  Cause:
  
  High Load on the Database: The database may be under heavy load, causing the data collector to take longer to gather the necessary information.
  Inefficient Queries: Long-running or inefficient queries can lead to increased runtime for the data collector.
  Configuration Issues: Incorrect configuration settings for the data collector can lead to performance issues.
  Resource Constraints: Insufficient system resources (CPU, memory, I/O) can slow down the data collection process.
  Database Locks: Locks on database objects can delay the data collection process.
  
  Solution:
  
  Analyze Database Performance: Use transaction codes like ST04 (Database Performance Analysis) or ST03 (Workload Analysis) to analyze the performance of the database and identify any long-running queries or bottlenecks.
  Optimize Queries: Review and optimize any inefficient SQL queries that may be causing delays.
  Adjust Data Collector Settings: Check the configuration settings for the data collector and adjust them if necessary. This may include changing the frequency of data collection or the amount of data being collected.
  Monitor System Resources: Ensure that the system has adequate resources (CPU, memory, disk I/O) to handle the workload. Consider scaling up resources if necessary.
  Check for Locks: Use transaction codes like SM12 (Display and Delete Locks) to check for any locks that may be affecting performance and resolve them if possible.
  Review Background Jobs: Check for any background jobs that may be running concurrently and consuming resources, leading to high runtime for the data collector.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to performance issues and data collectors for specific guidance and patches.
  SAP Community: Engage with the SAP Community forums for insights and experiences from other users who may have encountered similar issues.
  Documentation: Refer to the official SAP documentation for Database Performance Monitoring for detailed information on configuring and optimizing data collectors.
  
  By following these steps, you should be able to identify the root cause of the SDBALM157 error and implement appropriate solutions to mitigate the issue.