SQL Statements Performed Across Database Links run Slowly. Explain Plan Shows Function SYS_OP_C2C has been Applied to Predicates, and Query uses a Full Table Scan.
(Doc ID 2010872.1)
Last updated on JANUARY 31, 2019
Applies to:Oracle Database - Enterprise Edition - Version 10.2.0.4 to 126.96.36.199 [Release 10.2 to 12.1]
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
Information in this document applies to any platform.
- Insert using dblink is slow. The insert inserts to remote table, selecting from local tables with subselect referencing remote table:
- The local and remote databases have different NLS setting
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