Soft Link or Symbolic Link

S Link ( soft link or symbolic link) is required to read a shell script (.prog file) through a concurrent program.

We create a concurrent program of executable type as HOST. The host file extension is .prog. We must have to create a soft link to access this host file.

Host File Location – It is available at bin folder on custom top. ($XXXXX_TOP/bin)

Soft Link Creation –  ln -s  $FND_TOP/bin/fndcpesr  sourcefile

 ln -s  $FND_TOP/bin/fndcpesr  $v_custom_top/bin/XXXXX_TEST_SOFTLINK

The above command will create the soft link for XXXXX_TEST_SOFTLINK.prog file. The new link will look as below – 

Known Issues – Sometime concurrent program could not read the soft link, though it is available.  Below is the error message can be found in log file

FND-CP-ESP: Child: exec:: No such file or directory

/oracle/…/…/xxxxx/12.0.0/bin/XXXXX_TEST_SOFTLINK

Program exited with status 1

Root Cause – This issue appear if there is any control M character in prog file, which is the source for soft link.

Check for control M Char -$ ./XXXXX_TEST_SOFTLINK.prog

if output is file contents => No control M character available

if output has control M Char => 

Resolutions – Remove the control M character and re create the soft link.

1)      Delete the existing soft link   >>$  rm    XXXXX_TEST_SOFTLINK  

2)      Remove the control M character >>$ cat    XXXXX_TEST_SOFTLINK.prog | col -b >  XXXXX_TEST_SOFTLINK1.prog

3)   Delete the existing prog file  >> rm XXXXX_TEST_SOFTLINK.prog
4)   Rename the new prog file to old  >>$  mv     XXXXX_TEST_SOFTLINK1.prog  XXXXX_TEST_SOFTLINK.prog

4)      Re create the soft link for XXXXX_TEST_SOFTLINK.prog

**PS – Do not copy prog file in  binary mode or zipped mode to server. It may include control M character to prog file.