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Support Article

Maximum DB Connections Exceeded Due to Row Lock Contention

SA-50375

Summary



Connections rise to over 900 on the DB server due to row lock contention, causing the server to stop processing.

Error Messages



Not Applicable


Steps to Reproduce



Not Applicable


Root Cause



A defect or configuration issue in the operating environment.

During business hours, size of data file for Pega table space is increased, which resulted contentions for user operations, until the data file size increase operation completed.


Resolution



Make the following change to the operating environment:

- Implement a monitoring mechanism for data file size and schedule the data file size increase operations during off hours.

Or

- If there are multiple data files for a table space, then these sort of contentions will be reduced to manageable level.

Published February 16, 2018 - Updated October 8, 2020

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