Message type: E = Error
Message class: DB6 - DB6: Alert Monitoring and Alert Configuration
Message number: 111
Message text: The package cache hit ratio is too low
Too large a proportion of the requested description data for executing
SQL commands is not being read using the packet cache, but is being
physically read from the database.
System catalog data is required extremely often. You should therefore
take particular care to optimize access to it.
Increase the size of the packet cache using the command:
<LB>UPDATE DATABASE CONFIGURATION FOR <SID> USING PCKCACHESZ <(>
<<)>Value></>
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
DB6111
- The package cache hit ratio is too low ?The SAP error message DB6111 indicates that the package cache hit ratio is too low, which can lead to performance issues in the database. This message typically arises when the database is unable to efficiently reuse previously executed SQL statements, resulting in increased overhead for parsing and executing queries.
Cause: Low Package Cache Size: The package cache may be too small to hold frequently executed SQL statements, leading to a high number of cache misses. High Query Variability: If the application generates a large number of unique SQL statements (e.g., due to dynamic SQL), the cache may not be able to store them effectively. Insufficient Memory Allocation: The database may not have enough memory allocated to the package cache, causing it to evict entries too frequently. Database Configuration: Incorrect database configuration settings can lead to suboptimal performance and low cache hit ratios.
Solution: Increase Package Cache Size: Adjust the configuration settings to increase the size of the
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