Recreate control file,this is the code
CREATE CONTROLFILE REUSE DATABASE "ORCL" RESETLOGS NOARCHIVELOG
MAXLOGFILES 5
MAXLOGMEMBERS 3
MAXDATAFILES 100
MAXINSTANCES 1
MAXLOGHISTORY 226
LOGFILE
GROUP 1 '/home/oracle/app/oradata/orcl/redo01.log' SIZE 50M,
GROUP 2 '/home/oracle/app/oradata/orcl/redo02.log' SIZE 50M,
GROUP 3 '/home/oracle/app/oradata/orcl/redo03.log' SIZE 50M
DATAFILE
'/home/oracle/app/oradata/orcl/osc_zb.dbf',
......
CHARACTER SET ZHS16GBK;
After then open database,the result is as follows:
ORA-01194: file 1 needs more recovery to be consistent
ORA-01110: data file 1: '/home/oracle/app/oradata/orcl/system01.dbf'
recover datafile 1:
ORA-00283: recovery session canceled due to errors
ORA-16433: The database must be opened in read/write mode.
then,use hidden parameters to start database.
undo_management='manual'
undo_tablespace='UNDOTBS01'
_allow_resetlogs_corruption=true
also don't work:
SQL> startup pfile=/home/oracle/initoracle.ora
ORACLE instance started.
Total System Global Area 1586708480 bytes
Fixed Size 2253624 bytes
Variable Size 973081800 bytes
Database Buffers 603979776 bytes
Redo Buffers 7393280 bytes
Database mounted.
ORA-01113: file 1 needs media recovery
ORA-01110: data file 1: '/home/oracle/app/oradata/orcl/system01.dbf'
Such a cycle
SQL> recover datafile 1
ORA-00283: recovery session canceled due to errors
ORA-16433: The database must be opened in read/write mode.
I hava no idea to restore database,moguls,help me
Can start to mounted status?Maybe You can try following method。
first,find the 'CURRENT' redo groups.
select group#,sequence#,status,first_time,next_change# from v$log;
And find the redo file location
select * from v$logfile;
Then,through this redo log to recover database
SQL> recover database until cancel using backup controlfile;
ORA-00279: change 4900911271334 generated at 03/06/2018 05:46:29 needed for
thread 1
ORA-00289: suggestion :
/home/wonders/app/wonders/flash_recovery_area/ORCL/archivelog/2018_03_12/o1_mf_1
_4252_%u_.arc
ORA-00280: change 4900911271334 for thread 1 is in sequence #4252
Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
/home/wonders/app/wonders/oradata/orcl/redo01.log
Log applied.
Media recovery complete.
Finally,open database with ‘RESETLOGS’
Related
This question was migrated from Stack Overflow because it can be answered on Database Administrators Stack Exchange.
Migrated yesterday.
After unexpected shutdown the data base not open,
`ORA-01507:database not mounted
SQL>alter database mount;
ORA-00214:control file'E:\APP\ADMINISTRATOR\FLASH_RECOVERY_AREA\CLUSTER\CONTROLFILECONTROLFILE\OO1_MF_HB1484JB_.CTL' version 359456 inconsistent with file 'E:\APP\ADMINISTRATOR\ORAORADATA\CLUSTER\CONTROLFILE\O1_MF_HB114848J_.CTL'
I took a copy of both of the control files on external hard drive and replace the less version number with the higher version number, then excuted
```SQL> shutdown immediate;
ORA-01507:database not mounted
ORACLE instance shut down
SQL> startup mount;
Total System Global Area 2221395968 bytes
Fixed size 2177656 bytes
Variable size 1677723016 bytes
Database Buffers 536870912 bytes
Redo Buffer 4624384 bytes
ORA-00205: error in identiidentifying control file, check alert log for more info
One of your control files is either corrupted or contains older version of data than other. Did you run out of storage?
make copy of both
overwrite one control file with the other one (smaller by bigger or oldner by newer).
try to start database
When i trying to start oracle db, it says
ERROR at line 1:
ORA-01113: file 1 needs media recovery
ORA-01110: data file 1: '/u01/oradata/oracle/system01.dbf'
When I trying to recover using redo logs, i've got
SQL> recover database using backup controlfile;
ORA-00279: change 4925223599 generated at 02/05/2018 10:24:32 needed for thread
1
ORA-00289: suggestion :
/mnt/backup/oracle/ORACLE/archivelog/2018_02_05/o1_mf_1_186975_%u_.arc
ORA-00280: change 4925223599 for thread 1 is in sequence #186975
Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
/u01/oradata/oracle/redo01.log
ORA-00310: archived log contains sequence 186973; sequence 1
86975 required
ORA-00334: archived log: '/u01/oradata/oracle/redo01.log'
So, in the redo log i only have 186973 sequence. How can i revert all the oracle world to 186973 sequence and forget about next 2 seqs? I need to bring up the db anyhow and some chunk of last data i can lose.
Problem is solved by running
recover automatic database;
Yeah! That simple, thank you all
Was searching online for any description or explanation for Creating Control file in Oracle 11g .
All what i found is this code and could not understand it to be honest :
CREATE CONTROLFILE
SET DATABASE prod
LOGFILE GROUP 1 ('/u01/oracle/prod/redo01_01.log',
'/u01/oracle/prod/redo01_02.log'),
GROUP 2 ('/u01/oracle/prod/redo02_01.log',
'/u01/oracle/prod/redo02_02.log'),
GROUP 3 ('/u01/oracle/prod/redo03_01.log',
'/u01/oracle/prod/redo03_02.log')
RESETLOGS
DATAFILE '/u01/oracle/prod/system01.dbf' SIZE 3M,
'/u01/oracle/prod/rbs01.dbs' SIZE 5M,
'/u01/oracle/prod/users01.dbs' SIZE 5M,
'/u01/oracle/prod/temp01.dbs' SIZE 5M
MAXLOGFILES 50
MAXLOGMEMBERS 3
MAXLOGHISTORY 400
MAXDATAFILES 200
MAXINSTANCES 6
ARCHIVELOG;
Source for the above code : Creating Control Files
If that's ok i need small explination for the code , and if i want to Create three control files what should i do or change in the above code ?
Thank you guys already .
If that's ok i need small explanation for the code , and if i want to Create three control files what should i do or change in the above code ?
Yes, first of all you need to change your database name to database created before using create database or create controlfile command. Second path to these log and data files. Details explanation is given in Oracle's Online documentation which I have referenced below.
We create one control file for one database. In order to create control file first of all start the Oracle instance in nomount mode.
[user#localhost]$ sqlplus / as sysdba
SQL> startup nomount
SQL> create controlfile...
Reference:
CREATE CONTROLFILE
I am using Oracle XE 11g R2 and due to a mistake all the archivelogs where deleted by running delete archivelog all; command on RMAN.
Also one set of redo logs were deleted i.e. redo_g02a.log, redo_g02b.log and redo_g02c.log
Other redolog are available i.e. redo_g01a.log, redo_g01b.log, redo_g01c.log and redo_g03a.log, redo_g03b.log and redo_g03c.log
Is there a way I can startup the database now? It is a production database and I am really worried.
I tried copying from redo_g01a.log to redo_g02a.log ... but alert logs say:
ORA-00312: online log 2 thread 1: '/u01/app/oracle/fast_recovery_area/XE/onlinelog/redo_g02a.log'
USER (ospid: 30663): terminating the instance due to error 341
Any help will be much much appreciated.
First make a copy of your datafiles, redo logs, and control file. That way you can get back to this point.
If the database was shut down clean you can try clearing the group and it will be recreated for you.
SQL> connect / as sysdba
Connected to an idle instance.
SQL> startup mount;
ORACLE instance started.
Total System Global Area 1068937216 bytes
Fixed Size 2260048 bytes
Variable Size 675283888 bytes
Database Buffers 385875968 bytes
Redo Buffers 5517312 bytes
Database mounted.
SQL> alter database clear logfile group 2;
Database altered.
SQL> alter database open;
Database altered.
SQL>
If not you will need to recover and open with the resetlogs option. Unfortunately because you lost an entire log group you may also have lost data.
I usually generate explain plans using the following in sqlplus:
SET AUTOTRACE ON
SET TIMING ON
SET TRIMSPOOL ON
SET LINES 200
SPOOL filename.txt
SET AUTOTRACE TRACEONLY;
{query goes here}
SPOOL OFF
SET AUTOTRACE OFF
But what If I want to generate explain plan for a stored procedure?
Is there a way to generate explain plan for the entire stored procedure? The SP has no input/output parameters.
What you are generating is correctly called an "execution plan". "Explain plan" is a command used to generate and view an execution plan, much as AUTOTRACE TRACEONLY does in your example.
By definition, an execution plan is for a single SQL statement. A PL/SQL block does not have an execution plan. If it contains one or more SQL statements, then each of those will have an execution plan.
One option is to manually extract the SQL statements from the PL/SQL code and use the process you've already shown.
Another option is to active SQL tracing then run the procedure. This will produce a trace file on the server that contains the execution plans for all statements executed in the session. The trace is in fairly raw form so it is generally easiest to format it using Oracle's TKPROF tool; there are also various third-party tools that process these trace files as well.
Hi I have done like below for the stored procedure:
SET AUTOTRACE ON
SET TIMING ON
SET TRIMSPOOL ON
SET LINES 200
SPOOL filename.txt
SET AUTOTRACE TRACEONLY;
#your stored procedure path
SPOOL OFF
SET AUTOTRACE OFF
And got the below statistics:
Statistics
-----------------------------------------------------------
6 CPU used by this session
8 CPU used when call started
53 DB time
6 Requests to/from client
188416 cell physical IO interconnect bytes
237 consistent gets
112 consistent gets - examination
237 consistent gets from cache
110 consistent gets from cache (fastpath)
2043 db block gets
1 db block gets direct
2042 db block gets from cache
567 db block gets from cache (fastpath)
27 enqueue releases
27 enqueue requests
4 messages sent
31 non-idle wait count
19 non-idle wait time
44 opened cursors cumulative
2 opened cursors current
22 physical read total IO requests
180224 physical read total bytes
1 physical write total IO requests
8192 physical write total bytes
1 pinned cursors current
461 recursive calls
4 recursive cpu usage
2280 session logical reads
1572864 session pga memory
19 user I/O wait time
9 user calls
1 user commits
No Errors.
Autotrace Disabled