How To Fix SDBALM068 - Last known log sequence number

SDBALM068 - Overview

• Message type: E = Error

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

• Message number: 068

• Message text: Last known log sequence number

Alerts
The highest assigned log sequence number is a number between 1 and 2^32
= 4,294,967,296. However, the counter displayed here, which shows this
number is only counted up from 1 to 2^31 - it then jumps to -2^31 and
counts up again to -1 (-1 is therefore the highest possible log sequence
number). The threshold values are therefore negative numbers.
<ZH>Green:</>
Number >= 0 , or
Number < -1,966,080 = 15 GB (in pages), or
Instance is not ONLINE
<ZH>Yellow:</>
-1,966,080 = -15 GB (in pages) < number< -1,310,720 = -10 GB (in pages
), or
Could not determine number
<ZH>Red:</>
-1,310,720 = -10 GB (in pages) < number < 0
Data Collector
<ZH>Collector A</>
(RZ20 -> SAP CCMS Technical Experts Monitors -> All Monitoring Contexts
,,-> <(><<)>Name of the database connection> -> Collectors and Internals
-> Collectors -> Collector A)

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

Predefined runtime interval of Collector A: 5 Minutes

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SDBALM068 - Last known log sequence number ?

  The SAP error message SDBALM068, which refers to the "Last known log sequence number," typically occurs in the context of database log management, particularly when dealing with database backups and recovery processes. This error can indicate issues related to the database log files, such as inconsistencies or problems with the log sequence numbers.
  
  Cause:
  
  Log Sequence Number Mismatch: The error may arise when there is a mismatch between the expected log sequence number and the actual log sequence number in the database. This can happen if logs are missing or if there has been an incomplete backup or recovery process.
  Database Corruption: In some cases, the database may be corrupted, leading to inconsistencies in the log sequence numbers.
  Improper Configuration: Incorrect configuration settings for the database or the SAP system can also lead to this error.
  Incomplete Log Backups: If log backups are not completed successfully, it can lead to discrepancies in the log sequence