This documentation is for an older version of HVR.
Capabilities for Ingres
This section lists the Capabilities of HVR when using 'Ingres'. For more information about the pre-requisites, access privileges, and other configuration requirements, see Requirements for Ingres and Vector.
Capture
HVR supports the following capabilities on Ingres:
- Capture changes from location (Ingres from version 9.1 to version 11.1).
- Log-based capture (capture from DBMS logging system) (Ingres from version 9.1 to version 11.1).
- Log-based capture of tables without a primary key (Ingres from version 9.1 to version 11.1).
- Direct access to logs on a file system (Ingres from version 9.1 to version 11.1).
- Log-based capture of tables with LOB column (Ingres from version 9.1 to version 11.1).
- Rewind log-based capture to specific time (Hvrinit option -i) (Ingres from version 9.1 to version 11.1).
- Populates column hvr_cap_user for use in ColumnProperties {hvr_cap_user} substitutions (Ingres from version 9.1 to version 11.1).
- Log-based capture of truncate table statements (Ingres from version 9.1 to version 11.1).
- Multiple log-based capture jobs can capture from same database (Ingres from version 9.1 to version 11.1).
- Capture from tables with compression=data (Ingres from version 9.1 to version 11.1).
- Capture from tables with compression=hidata (Ingres from version 9.1 to version 11.1).
- Log-based capture checkpointing (action Capture /CheckpointingFrequency) (Ingres from version 9.1 to version 11.1).
- Hvrlogrelease to preserve journal/archives (Ingres from version 9.1 to version 11.1).
- Trigger-based capture (action Capture /TriggerBased) (Ingres from version 9.1 to version 11.1).
- Capture /QuickToggle (Ingres from version 9.1 to version 11.1).
- Boundaries between transactions preserved by trigger-based capture (Ingres from version 9.1 to version 11.1).
- Trigger-based capture jobs can be woken by db-event when change happens (Ingres from version 9.1 to version 11.1).
HVR does not support the following capabilities on Ingres:
- Capture from Archive log files only.
- Log-based capture of DDL statements using action AdaptDDL.
- Access to logs using SQL interface.
- Log-based capture from hidden rowid/RRN column (ColumnProperties /CaptureFromRowId).
- Rewind log-based capture to the beginning of currently active oldest transaction.
- Online refresh using accurate LSN/SCN.
- Read archives from an alternative directory (Capture /ArchiveLogPath).
Hub Database
HVR supports Hub database on Ingres.
Integrate
HVR supports the following capabilities on Ingres:
- Integrate changes into location (Ingres from version 9.1 to version 11.1).
- Integrate with /Burst (Ingres from version 9.1 to version 11.1).
- Integrate with /BurstCommitFrequency (Ingres from version 9.1 to version 11.1).
- Continuous integration (Integrate without /Burst) (Ingres from version 9.1 to version 11.1).
- Action TableProperties with /DuplicateRows for continuous integration (Ingres from version 9.1 to version 11.1).
- Continuous Integrate with /OnErrorSaveFailed (without /Burst) (Ingres from version 9.1 to version 11.1).
- Disable/enable database triggers during Integrate (/NoTriggerFiring) (Ingres from version 9.1 to version 11.1).
- Action Transform /SoftDelete (Ingres from version 9.1 to version 11.1).
- Creation and update of HVR state tables (Ingres from version 1.0 to version 11.1).
- Integrate with /DbProc (Ingres from version 9.1 to version 11.1).
Bi-directional Replication
HVR supports the following capabilities on Ingres:
- Detection of changes made by HVR in a bidirectional channel to prevent loop-back (Ingres from version 9.1 to version 11.1).
- CollisionDetect with Log-based Capture (without /TimestampColumn) (Ingres from version 9.1 to version 11.1).
- CollisionDetect with Trigger-based Capture (with Capture /TriggerBased and without CollisionDetect /TimestampColumn) (Ingres from version 9.1 to version 11.1).
- CollisionDetect with /TimestampColumn (Ingres from version 9.1 to version 11.1).
Refresh and Compare
HVR supports the following capabilities on Ingres:
- Hvrrefresh or Hvrcompare from source location (Ingres from version 1.0 to version 11.1).
- Hvrrefresh into target location (Ingres from version 1.0 to version 11.1).
- Row-wise Hvrrefresh into target location (option -g) (Ingres from version 1.0 to version 11.1).
- Disable/enable foreign keys and secondary indices during Hvrrefresh (option -F) (Ingres from version 1.0 to version 11.1).
- For a table: disable/enable journaling, disable/enable unique/primary constraints, disable/enable volatile secondary indices, support main storage structure during Hvrrefresh (Ingres from version 1.0 to version 11.1).
- Identity columns (Ingres from version 9.3 to version 11.1).
- Replicate database sequences (using action DbSequence) (Ingres from version 9.1 to version 11.1).
HVR does not support the following capabilities on Ingres:
- Select more than 4 billion rows during Hvrrefresh or Hvrcompare.
Other Capabilities
HVR supports the following capabilities on Ingres:
- Call database procedure dbproc during replication jobs (action AgentPlugin /DbProc) (Ingres from version 9.1 to version 11.1).
- DbObjectGeneration with /IncludeSQLFile (Ingres from version 9.1 to version 11.1).
- International table and column names where DBMS is not configured with UTF-8 encoding (Ingres from version 1.0 to version 11.1).
- Treat DBMS table names and columns as case sensitive if configured (action LocationProperties /CaseSensitiveNames defined) (Ingres from version 1.0 to version 11.1).
HVR does not support the following capabilities on Ingres:
- Use distribution key for parallelizing changes within a table (ColumnProperties /DistributionKey).
- Distinguish and support capture from 'column store tables'.