Using TAR Utility

tar.gz file is a combination of a .tar file and a .gz file. It is an archive file with several other files inside it.

Create TAR.gz

Simple TAR file of a Specific location

    

    [oracle@server]$                tar -cvf file_name.tar.gz /home/d01/oracle

Create simple TAR file of a Specific Location & save on /home/oracle/backup/ folder

    [oracle@server]$                tar -cvf /home/oracle/backup/file_name.tar.gz /home/d01/oracle

• c – creates a new archive
• v – verbose, meaning it lists the files it includes
• f – specifies the name of the file

Create compressed TAR file

    Add the -z option to create a compressed GNUZIP file

    [oracle@server]$    tar -cvzf file_name.tar.gz /home/d01/oracle

    [oracle@server]$    tar -cvzf /home/oracle/backup/file_name.tar.gz /home/d01/oracle

Extract TAR file

    You can unzip these files the same way you would unzip a regular zipped file:

Extract TAR file

    [oracle@server]$     tar -xvzf filename.tar

• x – instructs tar to extract the files from the zipped file
• v – to list out the files it’s extracting
• z – instructs tar to decompress the files
• f – tells tar the filename you want it to work on

Extract TAR file in specific /home/oracle/clone/db folder

    

    [oracle@server]$    tar –xvzf documents.tar.gz –C /home/oracle/clone/db/

Standard Purge Programs in Oracle Applications

 Purge Concurrent Request and/or Manager Data Purges Concurrent

requests and/or Concurrent Manager data and log/output files

Purge Signon Audit data Purges all Signon Audit
information ( FND_LOGINS, FND_LOGIN_RESPONSIBILITIES,
FND_LOGIN_RESP_FORMS ) created before a given date
GL Archive and Purge Archive and Purge Program

Purge Consolidation Audit Data Purge Consolidation Audit

Mass Additions Purge Report Mass Additions Purge
Report

Purge accounting tables Purge accounting tables

AP/PO Purge Abort Routine AP/PO Purge Abort Routine

AP/PO Purge Deletion Routine AP/PO Purge Deletion
Routine

AP/PO Purge Confirmation Routine AP/PO Purge Confirmation
Routine

AP/PO Purge Initiation (Selection) Routine AP/PO Purge Initiation
(Selection) Routine

AP/PO Purge Summarization Routine AP/PO Purge Summarization
Routine

Purge Report Listings Purge Report Listings

Autoinvoice Purge Program Purge processed
transactions in the AutoInvoice Interface tables

Purge Purge

Archive and Purge Archive and Purge

Purge Module Purge Module

Purge ABC information Purge ABC information

Purge transaction history Purge transaction history

Purge cycle count information Purge cycle count
information

Purge replenishment counts Purge replenishment
counts

Purge physical inventory information Purge physical inventory
information

Transaction Purge Transaction Purge

Purge Standard Cost History Purge Standard Cost
History

Purge Cost Information Purge Cost Information

Purge Configurations Purge Configuration Items

Purge Standard Cost History from SRS Purge Standard Cost
History from SRS

Purge Standard Cost Update History Purge Standard Cost
Update History

Engineering Change Order Purge program Engineering Change Order
Purge Program

Purge Designator Purge Designator

CRP Purge Bill of Resources Purge Capacity Bill of
Resources

Purge Simulation Sets Purge Simulation Sets

MIX Batch Process Validate,Transfer or
Purge MIX batches

MIX Batch Process (Purge) Purges all records
related to a batch

Purge Sales Orders Purge Sales Orders

Purge Completed Deals Purge Completed Deals

Archive/Purge Bank Statements Program – Archive/Purge

Order Purge Selection Order Purge Selection

Order Purge Order Purge

Purge Margin Analysis Run Purge Margin Analysis Run

WIP Purge WIP Purge

Payables Open Interface Purge Payables Open Interface
Purge

Purge Demand Interface Data Purge Demand Interface
Data

GL Archive and Purge Child Program Archive and Purge Child
Program

Purge Purchasing Open Interface Processed Data Purge Purchasing Open
Interface Processed Data Program

New Archive and Purge New Archive and Purge

Call New Archive and Purge Call New Archive and
Purge

Purge Credit Usages Purge Credit Usages

Not able to connect to Apps user in Database due to library cache locks

If there are many applications integrated with EBS then this issue arises, when we change apps password but the integrated applications keep trying to connect with old password causes library cache locks in the Database.

This prevent apps user from connecting to database.This scenario also arises when EBS instance is refreshed.
Numerous failed logins attempts can cause row cache lock waits and/or library cache lock waits.

We can observe  'Library cache lock' or 'row cache lock' when concurrent users login with wrong password to the database.
'row cache lock' is seen in 10.2 and 11.1
'library cache lock' is seen in 11.2.

Solution

1. Check for bad or incorrect password or login attack by running following sql:

select username,
os_username,
userhost,
client_id,
trunc(timestamp),
count(*) failed_logins
from dba_audit_trail
where returncode=1017 and --1017 is invalid username/password
timestamp < sysdate -7
group by username,os_username,userhost, client_id,trunc(timestamp);

 
2. Set the below event in the spfile or init.ora file and restart the database:

alter system set event ="28401 TRACE NAME CONTEXT FOREVER, LEVEL 1" scope=spfile;

or

EVENT="28401 TRACE NAME CONTEXT FOREVER, LEVEL 1"

REF:Library Cache Locks Due to Invalid Login Attempts (Doc ID 1309738.1)

Script for Changing Oracle Application Users Password

 We can use the below API for changing the EBS(fnd_user) user password.

 
 apps.fnd_user_pkg.changepassword
 
Sample Script:
 
DECLARE
   v_user_name      VARCHAR2 (100) := 'HSINGH';
   v_new_password   VARCHAR2 (100) := :NEWPASSWORD;
   v_status         BOOLEAN := NULL;
BEGIN
   v_status := fnd_user_pkg.changepassword (v_user_name, v_new_password);
 
   COMMIT;
   DBMS_OUTPUT.put_line (
      'Password is changed successfully for the user=> ' || v_user_name);
EXCEPTION
   WHEN OTHERS
   THEN
      DBMS_OUTPUT.put_line (
            'Error encountered while restting password for user and the Error Detail is '
         || SQLERRM);
END;
 
The script can also be modified to reset bulk ebs user passworda. The below is a sample script, You need to modify as per you need.
 
Refer below syntax
 
DECLARE
   v_status   BOOLEAN;
   CURSOR user_name_list
   IS
      SELECT user_name
        FROM fnd_user
       WHERE     NVL (end_date, SYSDATE + 1) > SYSDATE
             AND user_name NOT IN ('SYSADMIN',
                                   'GUEST',
                                   'XML_USER',
                                   'APPSMGR',
                                   'PORTAL30',
                                   'PORTAL30_SSO');
BEGIN
   FOR user_name_list IN c_user
   LOOP
      BEGIN
         v_status :=
            fnd_user_pkg.ChangePassword (
               username      => user_name_list.user_name,
               newpassword   => 'welcome123');
      --  dbms_output.put_line('password successfully changed for' || user_name_list.user_name);
      EXCEPTION
         WHEN OTHERS
         THEN
            DBMS_OUTPUT.put_line (
                  'Error encountered while resetting password for users and the Error Detail is '
               || SQLERRM);
      END;
   END LOOP;
END;

Some Useful UNIX Commands

 1.Deleting files older than N number of days ? 

find . -name '*.trc' -mtime +[N in days]  -exec rm {} \;  
Command will delete files older then N days in that directory

2.Copying file keeping timestamp preserve

cp -ip file.txt file_txt_bkp

3.Listing files modified in last N days

find . -mtime -<ndays> -exec ls -lt {} \;

4.Sorting files based on Size of file ?

ls -l | sort -nrk 5  | more
du -sm *|sort -nr|head -10

5.Finding CPU & Memory detail 

->cat /proc/cpuinfo  (CPU)
->cat /proc/meminfo (Memory)
->topas

6.Finding if any service is listening on particular port or not ?

netstat -an | grep {port no} 

7.Finding Process ID (PID) associated with any port ?

lsof | grep {port no.} 
lsof should be installed and in path.Many times it will be installed eith root user.Make sure you have that permission.

9.Finding a pattern in some file in a directory ?

grep pattern  file_name  ( find pattern in particular file )
grep -i pattern  file_name (find pattern ignoring the case)

10.Create symbolic link to a file ?

ln -s  pointing_to_original_file  symbolic_link_name

example
 ln -s /home/text.txt test.txt

11.History of command executed in the unix box

fc -l
fc -e - ls ( Would execute the last ls command.) 
History command will also do the same
history

12. Compressing a bigfile

zip -r new.zip new
or
compress file_name

13.Creating a tar file

tar -cvwf file.tar myfile.txt

14.Extracting the files from a tar file

tar -xvwf myfile.tar(System would unarchive (untar) the myfile.tar file into the current directory.)

tar -xvwzf myfile.tar.gz(System would unarchive (untar) the myfile.tar.gz file in the current directory.)

14.Extracting a gz file?

Use guzip command as follows:
gunzip file.gz
OR
gzip -d file.gz

15.Extract a tar.gz or .tgz file?

Files with extension tar.gz or .tgz are tar files compressed with gzip. On Unix system extract them with following command:
gunzip < file.tar.gz | tar xvf -
gunzip < file.tgz | tar xvf -

If you have GNU tar (Linux system) you can use the z option directly:
tar xvzf file.tar.gz
tar xvzf file.tgz
 
16.Using mailx command

echo "This is going to be body of the mail" |mailx -s "Subject:Testing" "false@gmail.com"

17.Checking the folders size & used space

df -h