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Function documentation Logging Transactions Locate the document in its SAP Library structure

Use

The database system logs all SQL statements from transactions that change data. In other words, it writes corresponding log entries.

This logging is used so that the database system can work consistently for all transactions, roll back individual SQL statements if necessary, or repeat them after a system crash (see Using Log Entries for a Restart or Recovery).

Features

Logging types

Name

Purpose

Redo Log Management

Enables completed transactions to be repeated

Undo Log Management

Enables transactions that are not yet complete to be rolled back

History Management

For liveCache database instances only: enables consistent reading without locking

Activities

Log settings are used to configure the logging behavior of the database system.

Note

In addition to the logging described here for transactions, it is also possible to log other database system actions (see Traces).

 

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