[ORACLE] Useful scripts for the day-to-day life of a DBA (Part 3) - System metrics

Hello everyone.

 

Hope you're doing well!

As I said here, I've created a repository on GITHUB to share some scripts that I like to make and that help me in my day-to-day life as a DBA.

 

Today's script is showmetrics.sql and is in the ENVIRONMENT directory.     
 

This script is used to check all system metric values of the long-duration and their details. If the standard deviation in the metrics is high, it marks the metric for verification.

 

It's the first version, so I'm sure the Advisor needs some 'tuning' 😆. The attempt here is to mark the metrics with a standard deviation above 50% for verification.

Remember that these are scripts that you can use and change at your own risk. They help me a lot, but they may not be as functional for you.

And more important, my script, my rules for advice, ok? 😆

If you think you have a better metric, and want to suggest it, I'd be happy to listen and analyze it.

And always remember:

1. Some scripts are a compilation of several other scripts I've created.
   
2. Some scripts are based on and adapted from existing scripts. Those that I found reference to the author I obviously identify in the script.
3. So, if there's a script that you're the author of and I've adapted to my reality and it's not mentioned, please let me know and I'll be happy to reference it.
4. Because they're my scripts, they have my logic and help me in my day-to-day work, it doesn't mean that they're the best or that they're always the most refined and concerned with good practices. They can help you, but that's all.
5.  Feel free to make changes, but please keep the reference to the authors.
6.  If you find any mistakes, please let me know.

Feel free to download here.

Regards

Mario Barduchi

[ORACLE] Useful scripts for the day-to-day life of a DBA (Part 1) - RMAN & SGA

Hello all 

 

Hope you're doing well!

I've created repository at GITHUB and I'm going to start sharing some scripts that I like to make and that help me in my day-to-day life as a DBA.

 

But some considerations are important:

1. Some scripts are a compilation of several other scripts I've created.
   
2. Some scripts are based on and adapted from existing scripts. Those that I found reference to the author I obviously identify in the script.
3. So, if there's a script that you're the author of and I've adapted to my reality and it's not mentioned, please let me know and I'll be happy to reference it.
4. Because they're my scripts, they have my logic and help me in my day-to-day work, it doesn't mean that they're the best or that they're always the most refined and concerned with good practices. They can help you, but that's all.
5.  Feel free to make changes, but please keep the reference to the authors.
6.  If you find any mistakes, please let me know.

The first scripts are for monitoring RMAN and one that combines various Advisors' results to suggest SGA tuning.

Remember that these are scripts that you can use and change at your own risk. They help me a lot, but may not be as functional for you.

 

The repository is https://github.com/MarioBarduchi/Scripts2DBA.

 

Feel free to download and use.

Regards

Mario Barduchi

Trigger de logon para ativar trace

Olá pessoal.

Tive uma necessidade a um tempo atrás de ativar um trace em uma detereminada sessão que viesse de um programa específico.

Coisa simples, então vou deixar documentado aqui para quem precisar a trigger de logon que eu usei.

create or replace trigger sys.LOGON_TRACE
      after logon on database
DECLARE
      v_username VARCHAR2(70);
      v_program  VARCHAR2(70);
BEGIN
      SELECT LOWER(USERNAME),
                      LOWER(PROGRAM)
      INTO  v_username,
                 v_program
      FROM sys.v_$session
      WHERE
                   sid = SYS_CONTEXT('USERENV', 'SID');

  -- if ora_login_user = 'MARIO' then   -- Se quiser utilizar a trigger em determinados logins
  IF (v_program = 'q_sender.exe' OR v_program='sqlplusw.exe')
  THEN
        EXECUTE IMMEDIATE 'ALTER SESSION SET sql_trace=TRUE';
        EXECUTE IMMEDIATE 'alter session set timed_statistics=true';
        EXECUTE IMMEDIATE 'alter session set max_dump_file_size=unlimited';
EXECUTE IMMEDIATE 'alter session set events=''10046 trace name context forever, level 12''';
  END IF;
END LOGON_TRACE;

/

Então é isso pessoal, simples e objetivo. 

Abraço

Mario

Backup RMAN - Alguns scripts

Boa tarde jovens.

Vou postar aqui um script de backup (e suas variações) que está mais que testado e que me ajuda bastante quando preciso fazer algo rápido e manual.

==================
-- Backup
==================
rman target / << EOF
run {
    allocate channel d1 type disk MAXPIECESIZE 8G;
    SQL 'ALTER SYSTEM ARCHIVE LOG CURRENT';
    SQL 'ALTER SYSTEM CHECKPOINT';
    backup AS COMPRESSED BACKUPSET format '/backups/PROD/%d_%Y%M%D_%I_%s_%U.dat' database;
    sql 'alter system archive log current';
    backup AS COMPRESSED BACKUPSET format '/backups/PROD/%d_%Y%M%D_%I_%s_%U.dat' archivelog all;
    release channel d1;
}
exit;
EOF


==================
-- Backup deletando archives e backupsets
==================
rman target / <
run {
    allocate channel d1 type disk MAXPIECESIZE 8G;
    SQL 'ALTER SYSTEM ARCHIVE LOG CURRENT';
    SQL 'ALTER SYSTEM CHECKPOINT';
    backup AS COMPRESSED BACKUPSET format '/backups/PROD/%d_%Y%M%D_%I_%s_%U.dat' database;
    sql 'alter system archive log current';
    backup AS COMPRESSED BACKUPSET format '/backups/PROD/%d_%Y%M%D_%I_%s_%U.dat' archivelog all;
    DELETE NOPROMPT ARCHIVELOG UNTIL TIME 'SYSDATE-5';
    DELETE NOPROMPT OBSOLETE DEVICE TYPE DISK;
    release channel d1;
}
exit;
EOF

========================
-- Backup somente de archives
========================
rman target / <
run {
    allocate channel d1 type disk MAXPIECESIZE 8G;
    SQL 'ALTER SYSTEM ARCHIVE LOG CURRENT';
    SQL 'ALTER SYSTEM CHECKPOINT';
    backup AS COMPRESSED BACKUPSET format '/backups/PROD/%d_%Y%M%D_%I_%s_%U.dat' archivelog all;
    release channel d1;
}
exit;
EOF

Simples e objetivo caso precise rodar algo manualmente.

Abraço
Mario