Databases Reference
In-Depth Information
Solution
The most common platforms for Oracle databases are Unix and its variants, such as Linux, Solaris, HPUX, and so on.
The presence of a shell programming language is extremely handy when using these variants. In this recipe, you will
learn how to develop a complete shell script to call any RMAN script. Here are some expectations for the script:
cron
.
•
It should be able to be run from some automated utility, such as
•
It should send an e-mail to a set of addresses after successful completion.
•
It should send an e-mail to another set of addresses after a failure.
•
It should back up to multiple mount points. In this example, we have assumed nine
mount points.
•
It should produce a log file whose name follows this format:
<ORACLE_SID>_<BACKUP_TYPE>_<BACKUP_MEDIA>_<TIMESTAMP>.log
•
The log file should show the time stamp in mm/dd/yy hh24:mi:ss format, not the default
dd-MON-yy format.
•
This log file should be copied over to a central server where all the DBA-related logs are kept.
In addition, the log file should be copied to one of the backup mount points as well.
•
The script should be generic enough to be called for any database. In other words, the script
should not hard-code components that will be different from database to database, such as
Oracle Home, SID, and so on.
•
The script should have a built-in locking mechanism; in other words, if the script is running
and is being called again, it shouldn't start.
With these requirements in mind, you can develop a script similar to the one that follows, which enables you
to back up any database automatically and on a recurring basis by using
cron
or some other job-scheduling utility.
(Our listing has line numbers to aid explanation; the actual script does not have those line numbers.) The script has
a configurable section in which you can replace the variable values to suit your environment.
1. # Beginning of Script
2. # Start of Configurable Section
3. export ORACLE_HOME=/opt/oracle/12.1/db_1
4. export ORACLE_SID=PRODB1
5. export TOOLHOME=/opt/oracle/tools
6. export BACKUP_MEDIA=DISK
7. export BACKUP_TYPE=FULL_DB_BKUP
8. export MAXPIECESIZE=16G
9. # End of Configurable Section
10. # Start of site specific parameters
11. export BACKUP_MOUNTPOINT=/oraback
12. export DBAEMAIL="dbas@proligence.com"
13. export DBAPAGER="dba.ops@proligence.com"
14. export LOG_SERVER=prolin2
15. export LOG_USER=oracle
16. export LOG_DIR=/dbalogs
17. export CATALOG_CONN=${ORACLE_SID}/${ORACLE_SID}@catalog
18. # End of site specific parameters
