Split a *.gz file and merge again in Linux or Windows.

This post will deal the situation where you have big size of dump of anything and you need to split that into smaller chunks than need to send over ftp/mail etc. After that need to regenerate the same it was before splitting.

Situation: I have a expdp dump of 35 GB, I need to send it via ftp mail which can accept maximum 1 GB file.


NOTE: With below command you can expdp without sysdba pwd.

expdp \"/ as sysdba\" FLASHBACK_TIME=\"TO_TIMESTAMP\(TO_CHAR\(SYSDATE,\'YYYY-MM-DD HH24:MI:SS\'\),\'YYYY-MM-DD HH24:MI:SS\'\)\" full=y dumpfile=full_db.dmp logfile=full_db.log DIRECTORY=DATAPUMP_DIR compression=METADATA_ONLY version=latest PARALLEL=4

NOTE: Another way to expdp without password is as under.

expdp \'/ as sysdba\' directory=DATAPUMP_DIR full=y ...

1. Zip the existing dump.
gzip full_db.dmp

2. Split the .gz file into 1 GB files.
split -b 1024m “full_db.dmp.gz” “full_db.dmp.gz_01”

3. Send it using appropriate method like ftp, attachement etc.
ftp/mail etc.

4. Merge splitted files again
Linux: cat full_db.dmp.gz_01a* > full_db.dmp.gz
Windows: copy /b file1 + file2 + file3 + file4 filetogether

5. Unzip the file and now you are ready to do everything on this file, as it was in step 1.
Now unzip the compressed dump and it is ready to use.
gunzip full_db.dmp.gz

Windows commands in nutshell

Here is the quick summary and few commands are in details:

1. nslookup
The nslookup tool can help you to verify that DNS name resolution is working correctly. When you run nslookup against a host name, the tool will show you how the name was resolved, as well as which DNS server was used during the lookup. This tool can be extremely helpful when troubleshooting problems related to legacy DNS records that still exist but that are no longer correct.
To use this tool, just enter the nslookup command, followed by the name of the host you want to resolve. For example:
C:\Users\Sanjay.Kumar>nslookup ask-sanjay.com
Server: vsresolverdns.atl3.dc.sita.aero
Non-authoritative answer:
Name: ask-sanjay.com
2. ping
Ping is probably the simplest of all diagnostic commands. It’s used to verify basic TCP/IP connectivity to a network host. To use it, simply enter the command, followed by the name or IP address of the host you want to test. For example:
Keep in mind that this command will work only if Internet Control Message Protocol (ICMP) traffic is allowed to pass between the two machines. If at any point a firewall is blocking ICMP traffic, the ping will fail.

C:\Users\Sanjay.Kumar>ping ask-sanjay.com
Pinging ask-sanjay.com [] with 32 bytes of data:
Reply from bytes=32 time=141ms TTL=44
Reply from bytes=32 time=162ms TTL=44
Reply from bytes=32 time=176ms TTL=44
Reply from bytes=32 time=195ms TTL=44

Ping statistics for
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 141ms, Maximum = 195ms, Average = 168ms
3. tasklist
The tasklist command is designed to provide information about the tasks that are running on a Windows 7 system. At its most basic, you can enter the following command:
The tasklist command has numerous option. One is the -m switch, which causes tasklist to display all the DLL modules associated with a task. The other is the -svc switch, which lists the services that support each task. Here’s how they look:
tasklist -m
tasklist -svc
4. taskkill
The taskkill command terminates a task, either by name (which is referred to as the image name) or by process ID. You can follow the taskkill command with -pid (process ID) or image nameand the name or process ID of the task that you want to terminate. Here are two examples of how this command works:
taskkill -pid 4934
taskkill -im iexplore.exe

5. telnet
Telnet ask-sanjay.com
NOTE: If telnet package is not installed on your system. You can install it by using below command
pkgmgr /iu:”TelnetClient”

NOTE: You may need to restart cmd to get it into affect.

6. tnsping
tnsping <service_name_having_entry_in_your_tnsnames.ora>
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = hostname)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = Name_of_Service)))
OK (1050 msec)

C:\Users\Sanjay.Kumar>tnsping v_ref_vsvxs1d

TNS Ping Utility for 64-bit Windows: Version – Production on 01-FEB-2013 10:43:09

Copyright (c) 1997, 2008, Oracle. All rights reserved.

Used parameter files:

For more information on a specific command, type HELP command-name
ASSOC                            Displays or modifies file extension associations.
ATTRIB                         Displays or changes file attributes.
BREAK                           Sets or clears extended CTRL+C checking.
BCDEDIT                       Sets properties in boot database to control boot loading.
CACLS                            Displays or modifies access control lists (ACLs) of files.
CALL                              Calls one batch program from another.
CD                                   Displays the name of or changes the current directory.
CHCP                             Displays or sets the active code page number.
CHDIR                          Displays the name of or changes the current directory.
CHKDSK                       Checks a disk and displays a status report.
CHKNTFS                    Displays or modifies the checking of disk at boot time.
CLS                                Clears the screen.
CMD                              Starts a new instance of the Windows command interpreter.
COLOR                          Sets the default console foreground and background colors.
COMP                            Compares the contents of two files or sets of files.
COMPACT                    Displays or alters the compression of files on NTFS partitions.
CONVERT                    Converts FAT volumes to NTFS. You cannot convert thecurrent drive.
COPY                             Copies one or more files to another location.
DATE                             Displays or sets the date.
DEL                                 Deletes one or more files.
DIR                                 Displays a list of files and subdirectories in a directory.
DISKCOMP                  Compares the contents of two floppy disks.
DISKCOPY                   Copies the contents of one floppy disk to another.
DISKPART                   Displays or configures Disk Partition properties.
DOSKEY                        Edits command lines, recalls Windows commands, and creates macros.
DRIVERQUERY         Displays current device driver status and properties.
ECHO                             Displays messages, or turns command echoing on or off.
ENDLOCAL                  Ends localization of environment changes in a batch file.
ERASE                           Deletes one or more files.
EXIT                               Quits the CMD.EXE program (command interpreter).
FC                                    Compares two files or sets of files, and displays the differences between them.
FIND                              Searches for a text string in a file or files.
FINDSTR                      Searches for strings in files.
FOR                                Runs a specified command for each file in a set of files.
FORMAT                      Formats a disk for use with Windows.
FSUTIL                        Displays or configures the file system properties.
FTYPE                          Displays or modifies file types used in file extension associations.
GOTO                           Directs the Windows command interpreter to a labeled line in a batch program.
GPRESULT                Displays Group Policy information for machine or user.
GRAFTABL               Enables Windows to display an extended character set in graphics mode.
HELP                           Provides Help information for Windows commands.
ICACLS                       Display, modify, backup, or restore ACLs for files and directories.
IF                                  Performs conditional processing in batch programs.
LABEL                        Creates, changes, or deletes the volume label of a disk.
MD                               Creates a directory.
MKDIR                       Creates a directory.
MKLINK                    Creates Symbolic Links and Hard Links
MODE                         Configures a system device.
MORE                         Displays output one screen at a time.
MOVE                         Moves one or more files from one directory to another directory.
OPENFILES              Displays files opened by remote users for a file share.
PATH                          Displays or sets a search path for executable files.
PAUSE                        Suspends processing of a batch file and displays a message.
POPD                           Restores the previous value of the current directory saved by PUSHD.
PRINT                        Prints a text file.
PROMPT                    Changes the Windows command prompt.
PUSHD                       Saves the current directory then changes it.
RD                                Removes a directory.
RECOVER                 Recovers readable information from a bad or defective disk.
REM                            Records comments (remarks) in batch files or CONFIG.SYS.
REN                             Renames a file or files.
RENAME                   Renames a file or files.
REPLACE                  Replaces files.
RMDIR                       Removes a directory.
ROBOCOPY              Advanced utility to copy files and directory trees
SET                             Displays, sets, or removes Windows environment variables.
SETLOCAL               Begins localization of environment changes in a batch file.
SC                               Displays or configures services (background processes).
SCHTASKS             Schedules commands and programs to run on a computer.
SHIFT                      Shifts the position of replaceable parameters in batch files.
SHUTDOWN          Allows proper local or remote shutdown of machine.
SORT                        Sorts input.
START                     Starts a separate window to run a specified program or command.
SUBST                     Associates a path with a drive letter.
SYSTEMINFO     Displays machine specific properties and configuration.
TASKLIST            Displays all currently running tasks including services.
TASKKILL           Kill or stop a running process or application.
TIME                     Displays or sets the system time.
TITLE                   Sets the window title for a CMD.EXE session.
TREE                     Graphically displays the directory structure of a drive or path.
TYPE                     Displays the contents of a text file.
VER                        Displays the Windows version.
VERIFY               Tells Windows whether to verify that your files are written correctly to a disk.
VOL                       Displays a disk volume label and serial number.
XCOPY                 Copies files and directory trees.
WMIC                  Displays WMI information inside interactive command shell.
For more information on tools see the command-line reference in the online help.

Here is the list full list from microsoft 

ASM Disks performance metric

ASM Disks performance metric

COLUMN disk_group_name FORMAT a20 HEAD ‘Disk Group Name’
COLUMN disk_path FORMAT a20 HEAD ‘Disk Path’
COLUMN reads FORMAT 999,999,999,999 HEAD ‘Reads’
COLUMN writes FORMAT 999,999,999,999 HEAD ‘Writes’
COLUMN read_errs FORMAT 999,999,999 HEAD ‘Read|Errors’
COLUMN write_errs FORMAT 999,999,999 HEAD ‘Write|Errors’
COLUMN read_time FORMAT 999,999,999,999 HEAD ‘Read|Time’
COLUMN write_time FORMAT 999,999,999,999 HEAD ‘Write|Time’
COLUMN bytes_read FORMAT 999,999,999,999,999 HEAD ‘Bytes|Read’
COLUMN bytes_written FORMAT 999,999,999,999,999 HEAD ‘Bytes|Written’
BREAK ON report ON disk_group_name SKIP 2
COMPUTE sum LABEL “” OF reads writes read_errs write_errs read_time write_time bytes_read bytes_written ON disk_group_name
COMPUTE sum LABEL “Grand Total: ” OF reads writes read_errs write_errs read_time write_time bytes_read bytes_written ON report
a.name disk_group_name
, b.path disk_path
, b.reads reads
, b.writes writes
, b.read_errs read_errs
, b.write_errs write_errs
, b.read_time read_time
, b.write_time write_time
, b.bytes_read bytes_read
, b.bytes_written bytes_written
FROM v$asm_diskgroup a JOIN v$asm_disk b USING (group_number)
ORDER BY a.name ;

Fusion Middleware environment start and stop steps

Steps to start and stop Fusion Middleware environment

1. Steps, in order, to start Fusion Middleware environment
2. Steps, in order, to stop Fusion Middleware environment

Starting an Oracle Fusion Middleware Environment

1. Steps, in order, to start Fusion Middleware environment.

1. Start the database-based repository i.e. start the database.
set the correct ORACLE_HOME and ORACLE_SID
Start the Net Listener:
$ORACLE_HOME/bin/lsnrctl start
Start the database instance:

SQL> connect SYS as SYSDBA
SQL> startup

2. Start the Oracle WebLogic Server Administration Server.
You can start/stop WebLogic Server Administration Servers using the WLST command line or a script.
$DOMAIN_HOME/bin/startWebLogic.sh <

Note: While you start/stop also start/stop the processes running in the Administration Server including the WebLogic Server Administration Console and Fusion Middleware Control.

3. Ensure Node Manager is running. Below is the script to stat it.
Note: stopNodeManager.sh can be used to stop it.

4. Start Oracle Identity Management system components.
Set $ORACLE_HOME and $ORACLE_INSTANCE environment for Identity Management components.
Start/stop OPMN and all system components:
$ORACLE_INSTANCE/bin/opmnctl startall

Steps, in order, to stop Fusion Middleware environment

2. Steps, in order, to stop Fusion Middleware environment

1. Stop system components as Oracle HTTP Server etc.
Note: You can stop them in any order.
$ORACLE_INSTANCE/bin/opmnctl stopall

To stop Oracle Management Agent, use the following command:

opmnctl stopproc ias-component=EMAGENT
2. Stop WebLogic Server Managed Servers. 
Note: Any applications deployed to the server are also stopped.
managed_server_name admin_url

3. Stop Oracle Identity Management components.
set $ORACLE_HOME environment variable to the Oracle home for the Identity Management components.
$ORACLE_INSTANCE/bin/opmnctl stopall

4.Stop the Administration Server.
You can start Server Administration Servers using the WLST command line or a script.


Note: While you start/stop also start/stop the processes running in the Administration Server including the WebLogic Server Administration Console and Fusion Middleware Control.

5. Stop the database.
connect SYS as SYSDBA
SQL> shutdown immediate ;