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Don Burleson Blog 







ORA-19502: Write Error on File Tips

Expert Oracle Database Tips by Donald BurlesonFebruary 23, 2015


Question:  Has anyone seen this error before?  In RMAN I issued:

backup database plus archivelog;

channel ORA_DISK_1: starting piece 1 at 17-MAR-07
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of backup command at 03/17/2007 12:12:06
ORA-19502: write error on file "4ceve9st_1_1", blockno 67969 (blocksize=8192)

What does this error message mean and how can I fix this?

Answer:  To diagnose any error, you start by using the oerr utility to fully display the ORA-19502 error:

ORA-19502: Write error on file "string", blockno string (blocksize=string)

Cause: Write error on output file

Action: Check the file

This information on ORA-19502 helped to clarify the initial odd-looking message.  It's a write error on an output file, just as it says.  As a result of the inability to write, it looks like an RMAN backup command failed.

In this situation, it turns out the error was an assumption that the location parameter default was set up, but this assumption was not true.  Setting the default by issuing a command like the following corrected the problem in this case: 

configure channel 1 device type disk format '/export/u03/hot_backup/backup_%U';

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