How to increase buffer size in Oracle SQL Developer to view all records?
If you are running a script, instead of a statement, you can increase this by selecting Tools/Preferences/Worksheet and increasing "Max Rows to print in a script". The default is 5000, you can change it to any size.
https://forums.oracle.com/forums/thread.jspa?threadID=447344
The pertinent section reads:
There's no setting to fetch all records. You wouldn't like SQL Developer to fetch for minutes on big tables anyway. If, for 1 specific table, you want to fetch all records, you can do Control-End in the results pane to go to the last record. You could time the fetching time yourself, but that will vary on the network speed and congestion, the program (SQL*Plus will be quicker than SQL Dev because it's more simple), etc.
There is also a button on the toolbar which is a "Fetch All" button.
FWIW Be careful retrieving all records, for a very large recordset it could cause you to have all sorts of memory issues etc.
As far as I know, SQL Developer uses JDBC behind the scenes to fetch the records and the limit is set by the JDBC setMaxRows() procedure, if you could alter this (it would prob be unsupported) then you might be able to change the SQL Developer behaviour.
Select Tools > Preferences > Database / Advanced
There is an input field for Sql Array Fetch Size but it only allows setting a max of 500 rows.
It is easy, but takes 3 steps:
- In SQL Developer, enter your query in the "Worksheet" and highlight it, and press F9 to run it. The first 50 rows will be fetched into the "Query Result" window.
- Click on any cell in the "Query Result" window to set the focus to that window.
- Hold the Ctrl key and tap the "A" key.
All rows will be fetched into the "Query Result" window!