Changing Tape Volumes on UNIX

The Backup Server requests a volume change when the tape capacity has been reached. The operator mounts another tape and executes sp_volchanged.

The following table illustrates this process.

Changing Tape Volumes on a UNIX System

Sequence

Operator, Using isql

SAP ASE Server

Backup Server

1

Issues the dump database command

2

Sends dump request to Backup Server

3

  1. Receives dump request message from the SAP ASE server

  2. Sends message for tape mounting to operator

  3. Waits for operator’s reply

4

  1. Receives volume change request from Backup Server

  2. Mounts tapes

  3. Executes sp_volchanged

5

  1. Checks tapes

  2. If tapes are okay, begins dump

  3. When tape is full, sends volume change request to operator

6

  1. Receives volume change request from Backup Server

  2. Mounts tapes

  3. Executes sp_volchanged

7

  1. Continues dump

  2. When dump is complete, sends messages to operator and the SAP ASE server

8

  1. Receives message that dump is complete

  2. Removes and labels tapes

  1. Receives message that dump is complete

  2. Releases locks

  3. Completes the dump database command

Parent topic: sp_volchanged