Poorly Performing Materialized-View Refresh With Index Compression High
(Doc ID 2677070.1)
Last updated on JUNE 12, 2020
Applies to:Oracle Database - Enterprise Edition - Version 22.214.171.124.0 and later
Information in this document applies to any platform.
After introducing compression and encryption (for HIPAA compliance), a complete materialized-view refresh of million rows is running for at least nineteen hours and not completing.
The DDL in question is:
INSERT /*+ BYPASS_RECURSIVE_CHECK */
SQL ID: 4pg5cdvctcd53
Was invoked by SQL_ID cks88p3q530h8:
LIST => '<<<
,METHOD => 'C'
,PUSH_DEFERRED_RPC => TRUE
,REFRESH_AFTER_ERRORS => FALSE
,PURGE_OPTION => 1
,PARALLELISM => 0
,ATOMIC_REFRESH => TRUE
,NESTED => FALSE
,OUT_OF_PLACE => FALSE
,SKIP_EXT_DATA => FALSE);
This database was migrated via Data Pump to a different host.
Compression and Encryption was introduced (for HIPAA compliance).
The index on the Mview was compressed using COMPRESS ADVANCED HIGH.
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