The system table HOTSTANDBYCOMPONENT describes some of the details of the hot standby component in which the information of this system table is queried.
HOTSTANDBYCOMPONENT
CHAR(64) |
Name with which hot standby component can be addressed |
|
MASTERLOCALNODE |
CHAR(64) |
Name with which corresponding master component can be addressed |
STANDBYROLE |
CHAR(8) |
Role within hot standby configuration (MASTER | STANDBY | UNKNOWN) |
TAKEOVERDATE |
TIMESTAMP |
Time at which a TAKEOVER statement was received |
DELAYTIME |
FIXED(10) |
Minimum number of seconds that must pass between the change being made in the master component, and the change also being made in this standby component |
STANDBYSTATEDATE |
TIMESTAMP |
Time at which component reached the STANDBY operational state |
SYNCHRONIZERECEIVECOUNT |
FIXED(10) |
Number of SYNCHRONIZE statements received by the component |
FIRSTNEEDEDLOGOFFSET |
FIXED(10) |
Oldest position in log area from which log entries have to be redone |
LASTVALIDLOGOFFSETRECEIVED |
FIXED(10) |
Position in log area up to which component can read log entries; this position was transferred with the last SYNCHRONIZE statement |
INITSTANDBYDATE |
TIMESTAMP |
Time at which component received last INIT STANDBY statement |
RESTARTSTANDBYDATE |
TIMESTAMP |
Time at which component sent last RESTART STANDBY statement |
LASTSYNCHRONIZEDATE |
TIMESTAMP |
Time at which component received last SYNCHRONIZE statement |
PREPARESTANDBYDATE |
TIMESTAMP |
Time at which component sent last PREPARE STANDBY statement |
REGISTERSTANDBYDATE |
TIMESTAMP |
Time at which component sent last REGISTER STANDBY statement |
See also:
Concepts of the Database System, Architecture of a Hot Standby System