iX V6.5 (30391-90011)

Chapter 7 343

Logging and Recovery

Logging Maintenance

Log File Time Stamps

The two log ﬁle time stamps are as follows:

• The DBSTORE time stamp set at the time the last database backup copy was made using

DBSTORE or TurboSTORE/iX 7x24 True-Online Backup (with ONLINE=START or

ONLINE=END option). This time stamp is used by roll-forward recovery. The DBSTORE

time stamp is ﬁxed and does not change once the database backup copy has been made.

• The roll-back time stamp created at the time the ﬁrst DBOPEN is executed against the

database. The roll-back time stamp is updated to the real time of the ﬁrst DBOPEN

following each close of the database, providing a roll-back termination point should a

roll-back recovery be required.