Password file locked??
Hi,
We have a reporting database on Oracle 10.2.0.4 (AIX 5.3) from which we want to create a DG physical standby.
The process fails because of a "possible" locked password file.
I have sorted things out, and it turns out that even on UNIX, when copying the file it says:
$ cp orapwREPPRD /tmp
cp: orapwREPPRD: A system call received a parameter that is not valid.Has anybody seen this behaviour. Can it be that the database holds an exclusive lock on the file, making it impossible for the OS to read/copy the file
The file's function looks OK. It gets updated if I grant 'sysdba' to a certain user.
However another database on the same server doesn't show this behaviour, so it could be the password file somehow got corrupted
The initfile says
SQL> show parameter remote_login_passwordfile
NAME TYPE VALUE
remote_login_passwordfile string EXCLUSIVE
SQL> Can I (simply) recreate the password file while the database is up and running?
Any hints are appreciated
Thanks
Password file is used when the first time connection is requested using it. So its not going to impact your current db if you are going to remove it. See here,
SQL> select * from V$version;
BANNER
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod
PL/SQL Release 10.2.0.1.0 - Production
CORE 10.2.0.1.0 Production
TNS for Linux: Version 10.2.0.1.0 - Production
NLSRTL Version 10.2.0.1.0 - Production
SQL> select status from V$instance;
STATUS
OPEN
SQL> exit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
-bash-3.00$ cd $ORACLE_HOME
-bash-3.00$ cd dbs/
-bash-3.00$ ls
hc_orcl.dat initdw.ora initorcl.ora lkPROD orapwprod spfileprod.ora
hc_prod.dat init.ora lkORCL orapworcl spfileorcl.ora
-bash-3.00$ rm orapworcl
-bash-3.00$ ls
hc_orcl.dat hc_prod.dat initdw.ora init.ora initorcl.ora lkORCL lkPROD orapwprod spfileorcl.ora spfileprod.ora
-bash-3.00$ sqlplus / as sysdba
SQL*Plus: Release 10.2.0.1.0 - Production on Thu Aug 13 15:53:11 2009
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
SQL> select status from V$instance;
STATUS
OPEN
SQL>
So if you are going to change the password file also, it won't impact the current db.
HTH
Aman....
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kellyfromdanville wrote:
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I know this may be a common question, but can someone explain why this code:
import java.io.*;
import java.nio.channels.*;
import java.util.*;
public class TestFileLock
private static File file;
private static RandomAccessFile fileRandom;
private static FileChannel fileChannel;
private static FileLock fileLock;
private static String process;
public static void main(String[] args)
process = args[0];
try
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fileRandom = new RandomAccessFile(file, "rw");
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for(int i =0; i < 1000; i++)
writeLogFile(process + ": happy days\n");
catch(Exception exception)
System.out.println(exception.getMessage());
exception.printStackTrace();
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* @author Noel Faux.
* @param s The string to be written to be appended to the file.
private static void writeLogFile(String s) throws IOException
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fileLock = fileChannel.tryLock();
while(fileLock == null)
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fileLock = fileChannel.tryLock();
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produces this error:
Invalid argument
java.io.IOException: Invalid argument
at sun.nio.ch.FileChannelImpl.lock0(Native Method)
at sun.nio.ch.FileChannelImpl.tryLock(FileChannelImpl.java:528)
at java.nio.channels.FileChannel.tryLock(FileChannel.java:967)
at TestFileLock.writeLogFile(TestFileLock.java:43)
at TestFileLock.main(TestFileLock.java:23)
on a intel linux box, java 1.4 and this code works fine:
import java.io.*;
import java.nio.channels.*;
import java.util.*;
public class TestFileLock
private static File file;
private static RandomAccessFile fileRandom;
private static FileChannel fileChannel;
private static FileLock fileLock;
private static String process;
public static void main(String[] args)
process = args[0];
try
file = new File("/home/fauxn/work/blast/java/java_blast/test.log");
//fileWriter = new FileWriter(file, true);
fileRandom = new RandomAccessFile(file, "rw");
fileChannel = fileRandom.getChannel();
for(int i =0; i < 1000; i++)
writeLogFile(process + ": happy days\n");
catch(Exception exception)
System.out.println(exception.getMessage());
exception.printStackTrace();
* Method lockes the logFile and then append the string to
* the file and unlocks the file.
private static void writeLogFile(String s) throws IOException
System.out.println(process + ": trying to lock the log file");
fileLock = fileChannel.tryLock(0, fileRandom.length(), false);
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fileLock = fileChannel.tryLock(0, fileRandom.length(), false);
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fileRandom.seek(fileRandom.length());
fileRandom.write(s.getBytes());
fileLock.release();
System.out.println(s + ": logfile unlocked");
Any suggestions welcome, or is this a bug????
Thanks in advance :)Its a known bug. The default tryLock() method calls the parametered
tryLock method as follows
tryLock(0,Long.MAX_VALUE,false);unfortunately under linux the parameter Long.MAX_VALUE is too big for
the underlying OS file locking. This causes the IOException to be thrown
It has been fixed in version 1.4.1 i believe.
For more info
http://developer.java.sun.com/developer/bugParade/bugs/4532474.html
matfud
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