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ORA-10260: "limit size (###) of the PGA heap set by event 10261 exceeded", When Execute simple SQL Command in Schema Service (Doc ID 2607203.1)

Last updated on APRIL 07, 2021

Applies to:

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


On : Schema Service, Oracle Application Express

When attempting to get results of simple queries, the following error occurs.

ORA-10260: limit size (1048576) of the PGA heap set by event 10261 exceeded

The issue can be reproduced at will with the following steps:
1. Access APEX.
2. Navigate to SQL Workshop ->SQL Commands .
3. Enter:
  select * FROM <large_table_name> order by <date_column> desc
4. Sporadically will the error will be presented instead of the result set. 


Running a query against a large table in the Database Cloud Schema Service.


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