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High Waits On 'block change tracking buffer space' - Checkpoint Contention With BLOCK CHANGE TRACKING or RMAN Incremental Backup (Doc ID 2094946.1)

Last updated on FEBRUARY 15, 2019

Applies to:

Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.

Purpose

 The document is intended to help customer understand how they can troubleshoot "block change tracking buffer space" wait events themselves and what are the basic approach needed to understand the issue and solve them.

Troubleshooting Steps

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In this Document
Purpose
Troubleshooting Steps
 1) Checkpoint gets stuck with the CKPT process waiting for CTWR. CKPT waits for "rdbms ipc reply" from CTWR (see p1 value)
 2) RMAN Incremental Backup High Waits On "block change tracking buffer space"
References

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