Troubleshooting
Problem
When Network Data Management Protocol (NDMP) is used for backup operations to a primary storage pool, copy storage pool, active-data pool, directory-container storage pool, or cloud-container storage pool on the
- NDMP backup operations to container storage pools can take longer to complete than backup operations to primary storage pools, copy storage pools, or active-data pool storage pools.
- An outstanding database transaction that can pin the Db2 log might occur because of the extended session times on all storage pool types. The larger the NDMP backup image, the more likely it is that a pinned log condition might occur.
- Restore operations might take a significant amount of more time when data deduplication is enabled on primary storage pools, copy storage pools, and active-data pool storage pools.
Symptom
Db2 log sizes grow exponentially and NDMP sessions to the server appear to hang during backup of data or table-of-contents (TOC) creation.
There might also be messages indicating that the Db2 database restarted while the data ingestion operation is ongoing. The restarts can eventually lead to a failure of the backup operation.
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Document Information
Modified date:
21 July 2020
UID
ibm10744203