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Procedure documentation Identifying Log Backups Since the Last Savepoint Locate the document in its SAP Library structure

Use

You are identifying the log backups that have been made in the original instance since the last savepoint of the standby instance. Import these log backups in sequence to bring the standby instance up to the latest status.

Note

The database system numbers the log backups and writes a log history.

Prerequisites

The log history of the original instance is not damaged.

Procedure

Use the Database Manager CLI for the following commands:

...

       1.      Use the Database Manager CLI to log on to the standby instance.

       2.      Display the data from the restart record or the standby instance. To do this, enter the following DBM command:

db_restartinfo

The Used LOG Page row specifies from which log page log entries have to be read first.

Example

Used LOG Page           1157
First LOG Page          2147483647
Restartable             1
Id Restart Record       mycomputer.mynet:HOTELDB_20040712_141643
Id LOG Info             mycomputer.mynet:HOTELDB_20040712_141643
Consistent              1

       3.      Use the Database Manager CLI to log on to the original instance.

       4.      Display the log history of the original instance:

backup_history_open
backup_history_list
backup_history_close

The log history specifies which log pages are contained in the individual log backups.

Example

[...]

40F281390005|LOG_00002|SAVE WARM|2004-07-12 13:59:07|2004-07-12 14:16:57|2004-07-12 14:16:57|2004-07-12 14:16:58|989|1157| |auto|64|1|0| |

[...]

Several log backups were carried out using backup media in the database instance. The log backup to LOG_00002 backup medium contains log page 1157 and therefore has to be imported first. Log backups LOG_00003, LOG_00004 and so on can then be imported.

 

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