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Parallel slave failing with ORA-12850 with parallel_degree_policy set to AUTO (Doc ID 2663486.1)

Last updated on AUGUST 17, 2020

Applies to:

Oracle Database - Enterprise Edition - Version 12.1.0.2 and later
Information in this document applies to any platform.

Symptoms

Database level sql queries failng with ORA-12850 while parallel_degree_policy set to AUTO.

SQL> select * FROM all_tab_statistics
  2 ;

*
ERROR at line 2:
ORA-12850: Could not allocate slaves on all specified instances: 2 needed, 1 allocated

 

parallel_degree_policy = auto <<---
parallel_degree = 2

File_name:: CxxxxT1_ora_112517_PX_traces_12850.trc

 

Cause

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