Ora-01157 Ora-01110 Error
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Ora-01157 Cannot Identify/lock Data File Tempfile
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ora 01157 ora 01110 system01 dbf ORA-01157 tips Oracle Database Tips by Burleson Consulting December 15, 2015 Question: I'mOra-01157 Cannot Identify/lock Data File 201 - See Dbwr Trace File
getting the ORA-01157 and ORA-01110 when trying to bring my tablespaces online: SQL> alter tablespace example online; alter tablespace example online * ERROR at line 1: ORA-01157: cannot identify/lock data ora-01110: data file file 5 - see DBWR trace file ORA-01110: data file 5: 'C:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\EXAMPLE01.DBF' How do I fix this ORA-01157 error? Answer: First, the Oracle docs note this on the ORA-01157 error: ORA-01157: cannot identify/lock data file string - see DBWR trace file Cause: The background process was either unable to find one of the data files or failed to lock it ora-01157 cannot identify/lock data file standby because the file was already in use. The database will prohibit access to this file but other files will be unaffected. However the first instance to open the database will need to access all online data files. Accompanying error from the operating system describes why the file could not be identified. Action: Have operating system make file available to database. Then either open the database or do ALTER SYSTEM CHECK DATAFILES.
As we see, the ORA-01157 is caused by a locking issue with the database writer (DBWR) background process. During a recovery, this can be caused by a unopened data files (i.e. database mounted but not open), a missing file, a permission problem in the file (e.g. no write permissions 770 on the files owned by Oracle). If the background process is unable to reach a data file, or is unable to lock it because it is in use , ORA-01157 is thrown because the database does not allow access. The other files will not be affected, but it is important to know that opening thelog in tour help Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business
Ora-01110 Data File 201
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Dbwr Trace File Location
database skills and learn from others in the community. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise http://www.dba-oracle.com/t_ora_01157_cannot_identify_lock_data_file_string_see_DBWR_trace_file.htm to the top I have mistakenly deleted Datafiles. up vote 2 down vote favorite 1 In my production server I have mistakenly deleted datafiles. When I am trying to open the database I am getting an error. The files are not important but the database is not opening up. SQL> alter database open; alter database open * ERROR at line 1: ORA-01589: must use RESETLOGS or NORESETLOGS option for database open SQL> alter database open RESETLOGS; http://dba.stackexchange.com/questions/60031/i-have-mistakenly-deleted-datafiles alter database open RESETLOGS * ERROR at line 1: ORA-01194: file 1 needs more recovery to be consistent ORA-01110: data file 1: '/u01/mars/oradata/MARS/system01.dbf' I have tried plenty of ways to recover but it is not opening. LIKE SQL> recover database until cancel; ORA-00283: recovery session canceled due to errors ORA-01610: recovery using the BACKUP CONTROLFILE option must be done RECOVER DATABASE USING BACKUP CONTROLFILE UNTIL CANCEL ; ORA-00283: recovery session canceled due to errors ORA-01110: data file 5: '/u01/mars/oradata/MARS/example01.dbf' ORA-01157: cannot identify/lock data file 5 - see DBWR trace file ORA-01110: data file 5: '/u01/mars/oradata/MARS/example01.dbf' oracle share|improve this question asked Mar 3 '14 at 12:11 temp 16113 migrated from stackoverflow.com Mar 3 '14 at 12:51 This question came from our site for professional and enthusiast programmers. 3 You need to restore your backup. –a_horse_with_no_name Mar 3 '14 at 12:13 2 The files are not important made me giggle, because the database already decided, that those ARE important. Restore backup from tape –Najzero Mar 3 '14 at 12:13 I am using backup up getting errors –temp Mar 3 '14 at 12:20 Did you actually restore the files, and to the right place? The messages suggest that they maybe still don't exist where expected, or have the wrong ownership. Recovery doesn't magically reinstate the deleted files, it makes the database consistent (
running in production. You can contact me at amit.rath0708@gmail.com. View my complete profile Tuesday, February 26, 2013 ORA-01157: cannot identify/lock data file 5 - see DBWR trace file Few days ago when I was trying to start my database , I faced this error. PFB details:- SQL> startup ORACLE instance started. Total System Global Area 612368384 bytes Fixed Size http://amit7oracledba.blogspot.com/2013/02/ora-01157-cannot-identifylock-data-file.html 1250428 bytes Variable Size 209718148 bytes Database https://scn.sap.com/thread/3245719 Buffers 394264576 bytes Redo Buffers 7135232 bytes Database mounted. ORA-01157: cannot identify/lock data file 5 - see DBWR trace file ORA-01110: data file 5: 'C:\ORACLE\PRODUCT\10.2.0\ORADATA\AMIT\AMIT01.DBF' Cause :- I checked the following location(C:\ORACLE\PRODUCT\10.2.0\ORADATA\AMIT)and found out that the file AMIT01.dbf was not present. Solution :- There are two solutions to the above problem. 1. If data in this file is not that much important that remove this file information data file from database and open your database. 2. If data in this file is important and you have backup available for this file and if your database is in archivelog mode than you can recover the data in this file upto the last commit.But if database is in NOARCHIVELOG mode then restoration of data possible only upto the last backup. Solution 1 :- Make the file Offline and then open your database after that drop that tablespace. SQL> set lin 400 SQL> col name for a55 SQL> select a.file#,a.name as FILE_NAME,b.name as TABLESPACE_NAME ,status from v$datafile a ,v$tablespace b where ora-01157 cannot identify/lock a.ts#=b.ts#; FILE# FILE_NAME TABLESPACE_NAME STATUS ---------- ----------------------------------------------------------------------------------- ----------------------------------------- ------------------ 1 C:\ORACLE\PRODUCT\10.2.0\ORADATA\AMIT\SYSTEM01.DBF SYSTEM SYSTEM 2 C:\ORACLE\PRODUCT\10.2.0\ORADATA\AMIT\UNDOTBS01.DBF UNDOTBS1 ONLINE 3 C:\ORACLE\PRODUCT\10.2.0\ORADATA\AMIT\SYSAUX01.DBF SYSAUX ONLINE 4 C:\ORACLE\PRODUCT\10.2.0\ORADATA\AMIT\USERS01.DBF USERS ONLINE 5 C:\ORACLE\PRODUCT\10.2.0\ORADATA\AMIT\AMIT01.DBF AMIT ONLINE SQL> drop tablespace AMIT including contents and datafiles; drop tablespace AMIT including contents and datafiles * ERROR at line 1: ORA-01109: database not open SQL> alter database datafile 'C:\ORACLE\PRODUCT\10.2.0\ORADATA\AMIT\AMIT01.DBF' offline drop; Database altered. SQL> alter database open; Database altered. SQL> select a.file#,a.name as FILE_NAME,b.name as TABLESPACE_NAME ,sta
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