The value of s_jdbc_connect_descriptor is NULL. while adop phase=prepare or fs_clone

Getting below error while adop phase=prepare or adop phase=fs_clone

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Validating configuration on node: [hostname].
    Log: /apps/TEST/fs_ne/EBSapps/log/adop/10/fs_clone_20170810_121726/TEST_app1
        [WARNING]: There could be issues while validating the ports used for E-Business Suite instance against ports used in /etc/services. Refer the log file for more details.
        [WARNING]: Either some of the required entries in /etc/hosts file might be missing (e.g. localhost or hostname) OR the file /etc/hosts could not be read.
        [ERROR]: The value of s_jdbc_connect_descriptor is NULL.
    [UNEXPECTED]Error occurred running "perl /apps/TEST/fs2/EBSapps/appl/ad/12.0.0/patch/115/bin/txkADOPValidations.pl  -contextfile=/apps/TEST/fs2/inst/apps/TEST_app1/appl/admin/TEST_app1.xml -patchctxfile=/apps/TEST/fs1/inst/apps/TEST_app1/appl/admin/TEST_app1.xml -phase=fs_clone -logloc=/apps/TEST/fs_ne/EBSapps/log/adop/10/fs_clone_20170810_121726/TEST_app1 -promptmsg=hide"
    [UNEXPECTED]Error 1 occurred while Executing txkADOPValidation script on app1


[STATEMENT] Please run adopscanlog utility, using the command

"adopscanlog -latest=yes"

to get the list of the log files along with snippet of the error message corresponding to each log file.


adop exiting with status = 1 (Fail)

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Parameter value of context file of patch should be same as run file system.

<jdbc_url oa_var="s_apps_jdbc_connect_descriptor">

and then try again.