## HOTSTANDBYGROUP

### Definition

The system table HOTSTANDBYGROUP contains information about the other hot standby instances in the hot standby system.

### Structure

HOTSTANDBYGROUP

LOCALNODE | CHAR(64) | Name with which the instance can be addressed
ADDNODEDATE | TIMESTAMP | Time at which the instance was added to the hot standby configuration
REMOVENODEDATE | TIMESTAMP | Time at which the instance was removed from the hot standby configuration
STATE | CHAR(20) | Status of the instance (UNKNOWN, PREPARE STANDBY, WAIT FOR SYNCHRONIZE, DEACTIVATED, REGISTER STANDBY, REMOVED, ADDED)
PREPARESTANDBYDATE | TIMESTAMP | Time at which the instance received the last PREPARE STANDBY statement
REGISTERSTANDBYDATE | TIMESTAMP | Time at which the instance received the last RECEIVE STANDBY statement
SYNCHRONIZEDATE | TIMESTAMP | Time at which the instance sent the last SYNCHRONIZE statement
SUCCESSFULSYNCHRONIZEDATE | TIMESTAMP | Time at which last successful SYNCHRONIZE statement was executed
LASTVALIDLOGOFFSETSENT | FIXED(10) | Last position sent by the master instance in the log area up to which log entries can be applied by the standby instances
FIRSTNEEDELOGOFFSET | FIXED(10) | Oldest position in log area up to which the master instance can write without overwriting log pages required by standby instances
SYNCHRONIZESENDCOUNT | FIXED(10) | Number of sent SYNCHRONIZE statements
SYNCHRONIZERETRYCOUNT | FIXED(10) | Number of SYNCHRONIZE statements that have failed since last successful SYNCHRONIZE statement

See also:

Concepts of the Database System, Architecture of a Hot Standby System