String 

LOG_ARCHIVE_FORMAT = filename 

Static 

Operating system dependent 

Any string that resolves to a valid filename 

Multiple instances can have different values, but identical values are recommended. 

LOG_ARCHIVE_FORMAT is applicable only if you are using the redo log in ARCHIVELOG mode. Use a text string and variables to specify the default filename format when archiving redo log files. The string generated from this format is appended to the string specified in the LOG_ARCHIVE_DEST parameter. The following variables can be used in the format:

%s: log sequence number

%S: log sequence number, zero filled

%t: thread number

%T: thread number, zero filled

Using uppercase letters for the variables (for example, %S) causes the value to be fixed length and padded to the left with zeros. An example of specifying the archive redo log filename format is:

LOG_ARCHIVE_FORMAT = "LOG%s_%t.ARC"

• Oracle8i Backup and Recovery Guide and Oracle8i Parallel Server Administration, Deployment, and Performance for more information on setting this parameter.

• Your operating system specific Oracle documentation for the default value and range of values for LOG_ARCHIVE_FORMAT.