Caché ObjectScript Reference - InterSystems Documentation

$ZUTIL(68,21)$ZUTIL(68,21)Sets synchronous commit mode for the current process.$ZUTIL(68,21,n)$ZU(68,21,n)ParametersnA boolean value that specifies whether or not synchronous transaction commit modeis enabled for the current process.DescriptionYou can use $ZUTIL(68,21) to set the synchronous transaction commit mode for the currentprocess. This enables or disables synchronizing TCOMMIT with the corresponding journalwrite operation. Every TCOMMIT command requests a flush of the journal data involved inthat transaction to disk. When $ZUTIL(68,21) is enabled (set to 1) a TCOMMIT does notcomplete until the journal data write operation completes. When set to 0, TCOMMIT doesnot wait for the write operation to complete.Invoking $ZUTIL(68,21) without specifying n returns the current switch setting.$ZUTIL(68,21) can be used when synchronous transaction commit mode is turned off systemwide(usually to improve performance), but the current process requires synchronouscommit—for example, when interfacing with another system.You can use $ZUTIL(69,21) to set the synchronous transaction commit mode system-wide.Setting $ZUTIL(69,21) changes the system configuration setting and is persistent acrossCaché shutdowns and startups.This system configuration setting can also be changed using the System Management Portal.Select Configuration, then select Advanced Settings. On the pull-down Category list selectTransactions. View and edit the current setting of SynchronousCommit. The default is “false”.ParametersnThe boolean switch that determines the default mode for synchronous transaction commit: 0= TCOMMIT completion does not wait for journal file write completion. 1 = TCOMMITcompletion waits for the journal file write operation to complete. The default is 0.Caché ObjectScript Reference 609