SQL

Purpose

Use the SQL command to execute a SQL statement or a PL/SQL stored procedure from within RMAN.

See Also:

Oracle Database SQL Language Reference

Prerequisites

None.

Syntax

sql::=

Description of the illustration sql.gif

Semantics

Syntax Element Description

Syntax Element	Description
`CHANNEL` `channel_id`	Specifies the case-sensitive name of a channel to use when executing an RMAN command within a `RUN` command. The channel must have been allocated using `ALLOCATE CHANNEL` in this `RUN` command. If you do not set this parameter, then RMAN uses the default channel.
`'command'`	Specifies a SQL statement for execution (see Example 3-51). `SELECT` statements are not permitted. You must use duplicate single quotes to insert a single quote into a quoted string when the quoted string uses the same style of quoting. For example, if the string that RMAN passes to SQL contains a file name, then the file name must be enclosed in duplicate single quotes and the entire string following the `SQL` keyword must be enclosed in double quotes (see Example 3-52). Note: Because `EXECUTE` is a SQL*Plus command, you cannot execute a PL/SQL program unit by specifying `EXECUTE` within the RMAN `SQL` command. Instead, you must use the `BEGIN` and `END` keywords. For example, to execute the PL/SQL procedure `rman.rman_purge` with the `SQL` command, issue the following command: SQL 'BEGIN rman.rman_purge; END;';

CHANNEL channel_id

Specifies the case-sensitive name of a channel to use when executing an RMAN command within a RUN command.

The channel must have been allocated using ALLOCATE CHANNEL in this RUN command. If you do not set this parameter, then RMAN uses the default channel.

'command'

Specifies a SQL statement for execution (see Example 3-51). SELECT statements are not permitted.

You must use duplicate single quotes to insert a single quote into a quoted string when the quoted string uses the same style of quoting. For example, if the string that RMAN passes to SQL contains a file name, then the file name must be enclosed in duplicate single quotes and the entire string following the SQL keyword must be enclosed in double quotes (see Example 3-52).

Note: Because EXECUTE is a SQL*Plus command, you cannot execute a PL/SQL program unit by specifying EXECUTE within the RMAN SQL command. Instead, you must use the BEGIN and END keywords. For example, to execute the PL/SQL procedure rman.rman_purge with the SQL command, issue the following command:

SQL 'BEGIN rman.rman_purge; END;';

Examples

Example 3-51 Archiving the Unarchived Online Logs

This example backs up a tablespace and then archives all unarchived online redo logs.

BACKUP TABLESPACE users;
SQL "ALTER SYSTEM ARCHIVE LOG CURRENT";

Example 3-52 Specifying a File Name within a Quoted String

This example specifies a file name by using duplicate single quotes within the context of a double-quoted string.

SQL "ALTER TABLESPACE users ADD DATAFILE ''/disk1/oradata/users02.dbf'' 
  SIZE 100K AUTOEXTEND ON NEXT 10K MAXSIZE 100K";