ERROR: Could not clone the Run context file due to the following exception R12.2

adop phase=prepare failed.
WARNING:     Exception occurred: java.sql.SQLException: Listener refused the connection with the following error:
ORA-12505, TNS:listener does not currently know of SID given in connect descriptor
Error occurred while executing "perl /u11/home/pdhint2/fs1/EBSapps/appl/ad/12.0.0/patch/115/bin/txkADOPPreparePhaseSynchronize.pl
[UNEXPECTED]Error while runPendingConfigClone sub-routine is called
cd $INST_TOP/admin/log/clone
view FSCloneApplyAppsTier_01082343.log
ERROR: Could not clone the Run context file due to the following exception:
null
ERROR: Failed to clone Run Context file to refresh Patch context file
 adConfigChanges.log
 view adzdshowts.out
 view adzdshowlog.out
 view adzdshowlog_cleanup.out
adopscanlog -latest=yes
view txkADOPValidations.error
view txkADOPValidations.log
view remote_execution_result_20160106_102803.xml
cd TXK_EVAL_prepare_Wed_Jan_6_10_30_04_2016
view CtxSynchronizer.log
view txkADOPEvalSrvStatus_Wed_Jan_6_10_30_04_2016.log
view txkADOPEvalSrvStatus_Wed_Jan_6_10_31_43_2016.log
diff /u11/home/pdhint2/fs1/inst/apps/pdhint2_pdhx01appd07/appl/admin/pdhint2_pdhx01appd07.xml_8jan16 /u11/home/pdhint2/fs1/inst/apps/pdhint2_pdhx01appd07/appl/admin/pdhint2_pdhx01appd07.xml
ls -lrth /u11/home/pdhint2/fs1/EBSapps/appl/ad/12.0.0/admin/template/adxmlctx.tmp
ls -lrth /u11/home/pdhint2/fs2/EBSapps/appl/ad/12.0.0/admin/template/adxmlctx.tmp
view /u11/home/pdhint2/fs2/EBSapps/appl/ad/12.0.0/admin/template/adxmlctx.tmp
ls -lrth /u11/home/pdhint2/fs2/EBSapps/appl/ad/12.0.0/admin/template/adxmlctx.tmp*
diff /u11/home/pdhint2/fs1/EBSapps/appl/ad/12.0.0/admin/template/adxmlctx.tmp /u11/home/pdhint2/fs1/EBSapps/appl/ad/12.0.0/admin/template/custom/adxmlctx.tmp
ls -lrth $AD_TOP/admin/template/custom/adxmlctx.tmp
grep -i Header /u11/home/pdhint2/fs1/EBSapps/appl/ad/12.0.0/admin/template/adxmlctx.tmp
/u11/home/pdhint2/fs1/inst/apps/pdhint2_pdhx01appd07/admin/log/
cd /u11/home/pdhint2/fs1/inst/apps/pdhint2_pdhx01appd07/admin/log/clone/FSCloneApplyAppsTier_01071727.log
[applpdhi@pdhx01appd07 clone]$ grep -i Header /u11/home/pdhint2/fs1/EBSapps/appl/ad/12.0.0/admin/template/custom/adxmlctx.tmp
<!-- $Header: adxmlctx.tmp 120.401.12020000.47 2014/11/27 09:06:56 jmajumde ship $ -->
Solution:
Issue was with missing custom entries in XML file.
[applpdhi@pdhx01appd07 ~]$ diff /u11/home/pdhint2/fs1/inst/apps/pdhint2_pdhx01appd07/appl/admin/pdhint2_pdhx01appd07.xml_8jan16 /u11/home/pdhint2/fs1/inst/apps/pdhint2_pdhx01appd07/appl/admin/pdhint2_pdhx01appd07.xml
>       <c_bio oa_var="c_bio" scope="CUSTOM" oa_type="PROD_TOP" oa_enabled="FALSE">/u11/home/pdhint2/fs1/EBSapps/appl/bio/12.0.0</c_bio>
>       <c_bio_au oa_var="c_bio_au" scope="CUSTOM" oa_type="PROD_TOP" oa_enabled="FALSE">/u11/home/pdhint2/fs1/EBSapps/appl/bio_au/12.0.0</c_bio_au>
>       <c_bio_ego oa_var="c_bio_ego" scope="CUSTOM" oa_type="PROD_TOP" oa_enabled="FALSE">/u11/home/pdhint2/fs1/EBSapps/appl/bio_ego/12.0.0</c_bio_ego>
>       <c_bio_fnd oa_var="c_bio_fnd" scope="CUSTOM" oa_type="PROD_TOP" oa_enabled="FALSE">/u11/home/pdhint2/fs1/EBSapps/appl/bio_fnd/12.0.0</c_bio_fnd>