How To Fix DB6PM845 - No index has been recommended, no existing index is used

DB6PM845 - Overview

• Message type: E = Error

• Message class: DB6PM - DB2 UDB for UNIX, Windows: Performance Monitoring

• Message number: 845

• Message text: No index has been recommended, no existing index is used

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DB6PM845 - No index has been recommended, no existing index is used ?

  The SAP error message DB6PM845 indicates that the database optimizer has not recommended any index for a particular SQL statement, and no existing index is being utilized for that query. This can lead to performance issues, as the database may need to perform a full table scan instead of using an index to quickly locate the required data.
  Causes:
  
  Lack of Suitable Indexes: There may not be any indexes defined on the columns being queried, or the existing indexes may not be optimal for the query.
  Query Structure: The SQL query may not be structured in a way that allows the optimizer to utilize existing indexes effectively.
  Statistics: Outdated or missing statistics can lead the optimizer to make poor decisions regarding index usage.
  Database Configuration: Certain database settings or configurations may affect how indexes are used or recommended.
  Data Distribution: The distribution of data in the table may not favor the use of indexes, especially if