Optionally, you can back up from a replicated file system with one of the two Informix® backup options. However, the Informix data format and the secondary database server cannot be used together.
Windows: ccmdb backup
UNIX on Informix: ccmdb backup
UNIX on Oracle: ccmdb backup
During the backup process, copying and archiving the file system data cause database downtime. However, to reduce database downtime, the -synced_files option replicates the file system data to a different location and performs the backup from that location. However, this method requires additional disk space.
This option reduces the time the database is protected by moving most of the time to back up the file system data outside of the transaction.
The ccmdb backup -format platform_dependent … option is a faster method of dumping metadata from Informix. However, the resulting backup file is less portable.
This method can be restored only to the same OS platform and Rational® Synergy version.
This method is only for use with backup. Do not use for upgrading or switching platforms.
This backup method uses the Informix RSS technology to keep a secondary database server in sync. The system performs the database integrity check and backup on the secondary server, leaving the primary server available for use. The second physical server must be configured like the primary.
There is no specific command-line option for using the secondary server. The ccmdb backup command automatically chooses the secondary server when the command is running on the secondary server machine.
This backup method is combined with the replicated file system backup method for least downtime.