rah and db2_all commands overview

You can run the commands sequentially at one database partition server after another, or you can run the commands in parallel. On Linux and UNIX platforms, if you run the commands in parallel, you can either choose to have the output sent to a buffer and collected for display (the default behavior) or the output can be displayed at the computer where the command is issued.

On Windows, if you run the commands in parallel, the output is displayed at the computer where the command is issued.

  rah command

  db2_all command

  rah "?"

The command can be almost anything which you could type at an interactive prompt, including, for example, multiple commands to be run in sequence. On Linux and UNIX platforms, you separate multiple commands using a semicolon (;). On Windows, you separate multiple commands using an ampersand (&). Do not use the separator character following the last command.

The following example shows how to use the db2_all command to change the database configuration on all database partitions that are specified in the node configuration file. Because the ; character is placed inside double quotation marks, the request will run concurrently:

  db2_all ";DB2 UPDATE DB CFG FOR sample USING LOGFILSIZ 100"