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Don Burleson Blog 







ORA-29285: File Write Error

Expert Oracle Database Tips by Donald BurlesonFebruary 8, 2015


Question:  I am trying to write a report in file but when the file size exceeds 32kb it starts breaking and gives me ORA-29285.  I am trying to create a report file through collection,  i.e., first I have written everything on collection and then iterating it and writing it in file.  That is the whole process... 

So how do I find out the cause of this ORA-29285 error?

To diagnose any error, start by using the oerr utility to display the ORA-29285 error:

ORA-29285 - file write error

Cause - Failed to write to, flush, or close a file.

Action - Verify that the file exists, that it is accessible, and that it is open in write or append mode.

When using the utl_file package, it is important to remember that the utl_file has a 32k length limit. (And are you putting carriage returns in the writes?) Review this link on Writing Oracle BLOB to OS file which shows how to write the data out in pieces if it is over 32kb.

Be sure to open like this:


And close like this: 


The error can be something as simple as exceeding a maximum line length here, or it could be not supplying a value for a max line length.  It could be that there is an error in UTL_FILE.FOPEN ( ) like needing one more parameter specified in the code. 

So look over those sections carefully!

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