SAP liveCache technology is an object-based enhancement of the MaxDB database system and was developed to manage complex objects (e.g. in logistical solutions such as SAP SCM/APO)
In solutions of this type, large volumes of data must be permanently available and modifiable. You can use SAP liveCache technology to represent data structures and data flows (such as networks and relationships) more easily and effectively.
In contrast to MaxDB, with an optimally configured SAP liveCache database instance, all data which must be accessible to the database system is located in the main memory.
You can find
information on the concepts from MaxDB and SAP liveCache technology in Concepts of the
Database System Use the
Glossary to find a
topic in the documentation quickly.
The following tools are available for administering and monitoring your liveCache database instance:
Database Manager:
Database
Manager GUI (graphical user interface) and
Database Manager
CLI (command line tool)
Database console XCONS
Perform the tasks in the table below when the corresponding events occur.
Event |
Task |
Tool |
More Information |
Database OFFLINE |
Switch the
database instance to the ONLINE operational state ( |
liveCache Assistant Database Manager |
|
Database instance failure with loss of data |
Restoring the Database Instance |
Database Manager |
|
Damaged index |
Restore the damaged index |
Database Manager |
|
Performance problems |
Analyze |
liveCache Assistant Database Analyzer Database Manager |
|
Database connection to another system required |
Create a connection |
liveCache Assistant |
|
New database version available |
Upgrade the database instance |
SAPInst |
service.sap.com/upgradeNW70 ® Upgrade Guide – SAP NetWeaver 7.0 liveCache Technology See also the SAP notes for the recommended parameter values for SAP liveCache technology under the component BC-DB-LVC. |
System copy required |
Create a system copy |
SAPInst |
SAP Note 210564 |
Other errors |
liveCache Assistant Database Manager XCONS |
Transaction LCA13 |
Regularly perform the tasks listed in the table below. If possible, use the liveCache planning calendar for these tasks.
We recommend that you activate the automatic log backup. Log backups are the prerequisite for a complete backup history.
Occurrence |
Task |
Recommended Tool |
More Information |
Daily |
Monitor the database instance and check if there are any alerts
|
liveCache Alert Monitor DBA Planning Calendar |
|
|
Monitor CPU usage |
Operating system commands |
|
|
If you cannot or do not want to perform a complete data backup every day, then you should perform at least an incremental data backup on each productive day. The more current the last data backup is, the fewer log entries have to be imported again if you need to restore the database instance. |
DBA Planning Calendar |
|
Weekly |
Only necessary for log backups on data carriers of the File type |
Operating system commands Database Manager |
|
|
Only necessary if automatic log backup is switched off |
DBA Planning Calendar |
|
|
DBA Planning Calendar |
||
|
DBA Planning Calendar |
See also:
Database
Administration in CCMS: SAP liveCache Technology
Overview of
available documentation on SAP liveCache
technology
Overview of
available documentation for MaxDB