Create a System Trigger to Enable SQL TRACE for a session..

The following script will enable session trace for the user scott.

[oracle@canada u01]$ cat trace_trigger.sql
set echo on

spool trace_trigger.log

DROP TRIGGER SYS.trace_trigger;

CREATE OR REPLACE TRIGGER sys.trace_trigger
After logon on database
Begin
            if ( user='SCOTT') then
                execute immediate 'alter session set sql_trace=true';
                execute immediate 'alter session set timed_statistics=true';
                execute immediate 'alter session set tracefile_identifier="SCOTT"';
                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;
/

spool off;


[oracle@canada u01]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Tue Oct 22 06:04:31 2013

Copyright (c) 1982, 2009, Oracle.  All rights reserved.


Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> @trace_trigger.sql
SQL>
SQL> spool trace_trigger.log
SQL>
SQL> DROP TRIGGER SYS.trace_trigger;
DROP TRIGGER SYS.trace_trigger
*
ERROR at line 1:
ORA-04080: trigger 'trace_trigger' does not exist


SQL>
SQL> CREATE OR REPLACE TRIGGER sys.trace_trigger
  2  After logon on database
  3  Begin
  4              if ( user='SCOTT') then
  5                  execute immediate 'alter session set sql_trace=true';
  6                  execute immediate 'alter session set timed_statistics=true';
  7                  execute immediate 'alter session set tracefile_identifier="SCOTT"';
  8                  execute immediate 'alter session set max_dump_file_size=unlimited';
  9                  execute immediate 'alter session set events ''10046 trace name context forever, level 12''';
 10              End if;
 11  End;
 12  /

Trigger created.

SQL>
SQL> spool off;
SQL>


SQL> select status from dba_triggers where trigger_name like'%TRACE_TRIGGER%';

STATUS
--------
ENABLED

To disable the trigger.

SQL> alter trigger trace_trigger disable;

Trigger altered.

SQL> select status from dba_triggers where trigger_name like'%TRACE_TRIGGER%';

STATUS
--------
DISABLED

To enable the trigger.

SQL> alter trigger trace_trigger enable;

Trigger altered.

SQL> select status from dba_triggers where trigger_name like'%TRACE_TRIGGER%';

STATUS
--------
ENABLED

Read more >>

Rman Disaster Recovery Walkthrough.

On Source


Make a backup location.

mkdir -p /u01/backup

Maker sure database is in archive log mode.

Configure control file backup parameters in Rman.

RMAN> configure controlfile autobackup on;

new RMAN configuration parameters:
CONFIGURE CONTROLFILE AUTOBACKUP ON;
new RMAN configuration parameters are successfully stored

RMAN> configure controlfile autobackup format for device type disk to '/u01/backup/cf%F';

new RMAN configuration parameters:
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '/u01/backup/cf%F';
new RMAN configuration parameters are successfully stored


Take backup of database plus archivelog.

[oracle@canada ~]$ rman target /

Recovery Manager: Release 11.2.0.1.0 - Production on Sat Oct 5 19:13:05 2013

Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.

connected to target database: DELL (DBID=3764293269)

RMAN> run
2> {
3> allocate channel c1 device type disk format '/u01/backup/%U';
4> allocate channel c2 device type disk format '/u01/backup/%U';
5> allocate channel c3 device type disk format '/u01/backup/%U';
6> allocate channel c4 device type disk format '/u01/backup/%U';
7> backup database plus archivelog;
8> }

using target database control file instead of recovery catalog
allocated channel: c1
channel c1: SID=51 device type=DISK

allocated channel: c2
channel c2: SID=28 device type=DISK

allocated channel: c3
channel c3: SID=49 device type=DISK

allocated channel: c4
channel c4: SID=34 device type=DISK


Starting backup at 05-OCT-13
current log archived
channel c1: starting archived log backup set
channel c1: specifying archived log(s) in backup set
input archived log thread=1 sequence=3 RECID=1 STAMP=828040174
channel c1: starting piece 1 at 05-OCT-13
channel c2: starting archived log backup set
channel c2: specifying archived log(s) in backup set
input archived log thread=1 sequence=4 RECID=2 STAMP=828040176
input archived log thread=1 sequence=5 RECID=3 STAMP=828040184
channel c2: starting piece 1 at 05-OCT-13
channel c3: starting archived log backup set
channel c3: specifying archived log(s) in backup set
input archived log thread=1 sequence=6 RECID=4 STAMP=828040185
input archived log thread=1 sequence=7 RECID=5 STAMP=828040187
channel c3: starting piece 1 at 05-OCT-13
channel c4: starting archived log backup set
channel c4: specifying archived log(s) in backup set
input archived log thread=1 sequence=8 RECID=6 STAMP=828040188
input archived log thread=1 sequence=9 RECID=7 STAMP=828040446
channel c4: starting piece 1 at 05-OCT-13
channel c1: finished piece 1 at 05-OCT-13
piece handle=/u01/backup/01ollp7v_1_1 tag=TAG20131005T191406 comment=NONE
channel c1: backup set complete, elapsed time: 00:00:00
channel c2: finished piece 1 at 05-OCT-13
piece handle=/u01/backup/02ollp7v_1_1 tag=TAG20131005T191406 comment=NONE
channel c2: backup set complete, elapsed time: 00:00:00
channel c3: finished piece 1 at 05-OCT-13
piece handle=/u01/backup/03ollp7v_1_1 tag=TAG20131005T191406 comment=NONE
channel c3: backup set complete, elapsed time: 00:00:00
channel c4: finished piece 1 at 05-OCT-13
piece handle=/u01/backup/04ollp7v_1_1 tag=TAG20131005T191406 comment=NONE
channel c4: backup set complete, elapsed time: 00:00:01
Finished backup at 05-OCT-13

Starting backup at 05-OCT-13
channel c1: starting full datafile backup set
channel c1: specifying datafile(s) in backup set
input datafile file number=00001 name=/u01/app/oracle/oradata/dell/system01.dbf
channel c1: starting piece 1 at 05-OCT-13
channel c2: starting full datafile backup set
channel c2: specifying datafile(s) in backup set
input datafile file number=00002 name=/u01/app/oracle/oradata/dell/sysaux01.dbf
input datafile file number=00004 name=/u01/app/oracle/oradata/dell/users01.dbf
channel c2: starting piece 1 at 05-OCT-13
channel c3: starting full datafile backup set
channel c3: specifying datafile(s) in backup set
input datafile file number=00005 name=/u01/app/oracle/oradata/dell/example01.dbf
input datafile file number=00003 name=/u01/app/oracle/oradata/dell/undotbs01.dbf
channel c3: starting piece 1 at 05-OCT-13
channel c3: finished piece 1 at 05-OCT-13
piece handle=/u01/backup/07ollp81_1_1 tag=TAG20131005T191408 comment=NONE
channel c3: backup set complete, elapsed time: 00:00:37
channel c2: finished piece 1 at 05-OCT-13
piece handle=/u01/backup/06ollp81_1_1 tag=TAG20131005T191408 comment=NONE
channel c2: backup set complete, elapsed time: 00:01:18
channel c1: finished piece 1 at 05-OCT-13
piece handle=/u01/backup/05ollp81_1_1 tag=TAG20131005T191408 comment=NONE
channel c1: backup set complete, elapsed time: 00:01:50
Finished backup at 05-OCT-13

Starting backup at 05-OCT-13
current log archived
channel c1: starting archived log backup set
channel c1: specifying archived log(s) in backup set
input archived log thread=1 sequence=10 RECID=8 STAMP=828040560
channel c1: starting piece 1 at 05-OCT-13
channel c1: finished piece 1 at 05-OCT-13
piece handle=/u01/backup/08ollpbg_1_1 tag=TAG20131005T191600 comment=NONE
channel c1: backup set complete, elapsed time: 00:00:01
Finished backup at 05-OCT-13

Starting Control File and SPFILE Autobackup at 05-OCT-13
piece handle=/u01/backup/cfc-3764293269-20131005-00 comment=NONE
Finished Control File and SPFILE Autobackup at 05-OCT-13
released channel: c1
released channel: c2
released channel: c3
released channel: c4

Take backup of spfile.


RMAN> backup spfile to destination '/u01/backup/';

Starting backup at 05-OCT-13
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=49 device type=DISK
channel ORA_DISK_1: starting full datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set
including current SPFILE in backup set
channel ORA_DISK_1: starting piece 1 at 05-OCT-13
channel ORA_DISK_1: finished piece 1 at 05-OCT-13
piece handle=/u01/backup/DELL/backupset/2013_10_05/o1_mf_nnsnf_TAG20131005T192028_950694xh_.bkp tag=TAG20131005T192028 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01
Finished backup at 05-OCT-13

Starting Control File and SPFILE Autobackup at 05-OCT-13
piece handle=/u01/backup/cfc-3764293269-20131005-01 comment=NONE
Finished Control File and SPFILE Autobackup at 05-OCT-13

DBID of database to be restored DBID=3764293269


On new host where database is to be restored
make required directories

[oracle@newyork ~]$ mkdir -p /u01/app/oracle/admin/dell/adump
[oracle@newyork ~]$ mkdir -p /u01/app/oracle/oradata/dell/
[oracle@newyork ~]$ mkdir -p /u01/app/oracle/flash_recovery_area/dell/


Copy backup files to the destination server.

On Destination Server

1) Restore the spfile



[oracle@newyork ~]$ export ORACLE_SID=dell
[oracle@newyork ~]$ rman target /

Recovery Manager: Release 11.2.0.1.0 - Production on Sat Oct 5 19:34:27 2013

Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.

connected to target database (not started)

RMAN> set dbid=3764293269

executing command: SET DBID

RMAN> startup force nomount;

startup failed: ORA-01078: failure in processing system parameters
LRM-00109: could not open parameter file '/u01/app/oracle/product/11.2.0/db_1/dbs/initdell.ora'

starting Oracle instance without parameter file for retrieval of spfile
Oracle instance started

Total System Global Area     159019008 bytes

Fixed Size                     1335192 bytes
Variable Size                 75497576 bytes
Database Buffers              79691776 bytes
Redo Buffers                   2494464 bytes


RMAN> restore spfile from '/u01/backup/cfc-3764293269-20131005-00';

Starting restore at 05-OCT-13
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=19 device type=DISK

channel ORA_DISK_1: restoring spfile from AUTOBACKUP /u01/backup/cfc-3764293269-20131005-00
channel ORA_DISK_1: SPFILE restore from AUTOBACKUP complete
Finished restore at 05-OCT-13




RMAN> shutdown immediate

Oracle instance shut down



2) Restore controlfile

RMAN> startup nomount

connected to target database (not started)
Oracle instance started

Total System Global Area     272011264 bytes

Fixed Size                     1335952 bytes
Variable Size                201330032 bytes
Database Buffers              67108864 bytes
Redo Buffers                   2236416 bytes





RMAN> run
2> {
3> set controlfile autobackup format for device type disk to '/u01/backup/cf%F';
4> restore controlfile from autobackup;
5> }

executing command: SET CONTROLFILE AUTOBACKUP FORMAT

Starting restore at 05-OCT-13
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=19 device type=DISK

recovery area destination: /u01/app/oracle/flash_recovery_area
database name (or database unique name) used for search: DELL
channel ORA_DISK_1: no AUTOBACKUPS found in the recovery area
channel ORA_DISK_1: looking for AUTOBACKUP on day: 20131005
channel ORA_DISK_1: AUTOBACKUP found: /u01/backup/cfc-3764293269-20131005-01
channel ORA_DISK_1: restoring control file from AUTOBACKUP /u01/backup/cfc-3764293269-20131005-01
channel ORA_DISK_1: control file restore from AUTOBACKUP complete
output file name=/u01/app/oracle/oradata/dell/control01.ctl
output file name=/u01/app/oracle/flash_recovery_area/dell/control02.ctl
Finished restore at 05-OCT-13



3) Restore the database.

RMAN> alter database mount;

database mounted
released channel: ORA_DISK_1


RMAN> catalog start with '   ';  (if backup destination is different from source)



RMAN> restore database;

Starting restore at 05-OCT-13
Starting implicit crosscheck backup at 05-OCT-13
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=19 device type=DISK
Crosschecked 10 objects
Finished implicit crosscheck backup at 05-OCT-13

Starting implicit crosscheck copy at 05-OCT-13
using channel ORA_DISK_1
Finished implicit crosscheck copy at 05-OCT-13

searching for all files in the recovery area
cataloging files...
no files cataloged

using channel ORA_DISK_1

channel ORA_DISK_1: starting datafile backup set restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_DISK_1: restoring datafile 00003 to /u01/app/oracle/oradata/dell/undotbs01.dbf
channel ORA_DISK_1: restoring datafile 00005 to /u01/app/oracle/oradata/dell/example01.dbf
channel ORA_DISK_1: reading from backup piece /u01/backup/07ollp81_1_1
channel ORA_DISK_1: piece handle=/u01/backup/07ollp81_1_1 tag=TAG20131005T191408
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: restore complete, elapsed time: 00:00:23
channel ORA_DISK_1: starting datafile backup set restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_DISK_1: restoring datafile 00002 to /u01/app/oracle/oradata/dell/sysaux01.dbf
channel ORA_DISK_1: restoring datafile 00004 to /u01/app/oracle/oradata/dell/users01.dbf
channel ORA_DISK_1: reading from backup piece /u01/backup/06ollp81_1_1
channel ORA_DISK_1: piece handle=/u01/backup/06ollp81_1_1 tag=TAG20131005T191408
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: restore complete, elapsed time: 00:00:37
channel ORA_DISK_1: starting datafile backup set restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_DISK_1: restoring datafile 00001 to /u01/app/oracle/oradata/dell/system01.dbf
channel ORA_DISK_1: reading from backup piece /u01/backup/05ollp81_1_1
channel ORA_DISK_1: piece handle=/u01/backup/05ollp81_1_1 tag=TAG20131005T191408
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: restore complete, elapsed time: 00:00:58
Finished restore at 05-OCT-13



4) Recover the database

RMAN> recover database;

Starting recover at 05-OCT-13
using channel ORA_DISK_1

starting media recovery

channel ORA_DISK_1: starting archived log restore to default destination
channel ORA_DISK_1: restoring archived log
archived log thread=1 sequence=10
channel ORA_DISK_1: reading from backup piece /u01/backup/08ollpbg_1_1
channel ORA_DISK_1: piece handle=/u01/backup/08ollpbg_1_1 tag=TAG20131005T191600
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: restore complete, elapsed time: 00:00:01
archived log file 

name=/u01/app/oracle/flash_recovery_area/DELL/archivelog/2013_10_05/o1_mf_1_10_9507y3bg_.arc thread=1 

sequence=10
channel default: deleting archived log(s)
archived log file 

name=/u01/app/oracle/flash_recovery_area/DELL/archivelog/2013_10_05/o1_mf_1_10_9507y3bg_.arc RECID=9 

STAMP=828042523
unable to find archived log
archived log thread=1 sequence=11
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of recover command at 10/05/2013 19:48:45
RMAN-06054: media recovery requesting unknown archived log for thread 1 with sequence 11 and starting SCN 
of 797450


Note: Ignore the error and relogin to thr rman prompt.





5) open with resetlogs

[oracle@newyork ~]$ rman target /

Recovery Manager: Release 11.2.0.1.0 - Production on Sat Oct 5 19:52:07 2013

Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.

connected to target database: DELL (DBID=3764293269, not open)

RMAN> sql 'alter database open resetlogs';

using target database control file instead of recovery catalog
sql statement: alter database open resetlogs

RMAN> exit


Recovery Manager complete.


6) verify



[oracle@newyork ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Sat Oct 5 19:54:11 2013

Copyright (c) 1982, 2009, Oracle.  All rights reserved.


Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> archive log list;
Database log mode              Archive Mode
Automatic archival             Enabled
Archive destination            USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence     1
Next log sequence to archive   1
Current log sequence           1


SQL> select name, dbid from v$database;

NAME            DBID
--------- ----------
DELL      3764293269

Read more >>