Common MYSQL Error – Can’t create/write to file
If you get an error of the following type for some queries, it means that MySQL cannot create a temporary file for the result set in the temporary directory:
Can’t create/write to file ‘\\sqla3fe_0.ism’.
The preceding error is a typical message for Windows; the Unix message is similar.
One fix is to start mysqld with the –tmpdir option or to add the option to the [mysqld] section of your option file. For example, to specify a directory of C:\temp, use these lines:
The C:\temp directory must exist and have sufficient space for the MySQL server to write to. “Using Option Files”.
Another cause of this error can be permissions issues. Make sure that the MySQL server can write to the tmpdir directory.
Check also the error code that you get with perror. One reason the server cannot write to a table is that the file system is full:
shell> perror 28
OS error code 28: No space left on device
If you get an error of the following type during startup, it indicates that the file system or directory used for storing data files is write protected. Providing the write error is to a test file, This error is not serious and can be safely ignored.
Can’t create test file /usr/local/mysql/data/master.lower-test
What are MYSQL Errors?
MySQL programs have access to several types of error information when the server returns an error.
The MYSQL message displayed contains three types of information:
A numeric error code. This number is MySQL-specific and is not portable to other database systems.
A five-character SQLSTATE value. The values are specified by ANSI SQL and ODBC and are more standardized. Not all MySQL error numbers are mapped to SQLSTATE error codes.
A message string that provides a textual description of the error.
When an error occurs, you can access the MySQL error code, the SQLSTATE value, and the message string using C API functions:
MySQL error code: Call mysql_errno()
SQLSTATE value: Call mysql_sqlstate()
Error message: Call mysql_error()
Hope this was helpful.
Information about MYSQL Error Codes and Error Messages or Warnings on Windows, Linux Operating Systems.