Insert data into oracle based on sql server data(here sql server acting as source to oracle and destination to oracle)

Question

Source is Oralce. Destination is SQL Server.
Requirement - I have to fetch sql server server data (empid's) based emp table  and send this as input data to oracle to fetch and empid's are common.
I cannot use merge or loopkup or for each as oracle have too many records.
For example - In MS SQL - i have empid=1,2..Only these records, I have to fetch from oracle source into sql server destination. For this, I have adopted the below approaches...The major problem I face, when i build a empid's as a string, it is taking only
4000 chars. My string lenght is 10000. How do I breakup this string lengh and send to data flow task till all broken strings length passed to DFT.
Approach-1
created two variables - oraquery string, empid string
step1 - ms sql database - created sql task - declare @empid varchar(max)
SELECT @empid=
Stuff((SELECT ',' + empid
        FROM  
        (SELECT  DISTINCT  convert(varchar(10),empid ) empid FROM emp
         ) x
        For XML PATH ('')),1,1,'')
select @empid =    '(' +  @empid + ')'
select @empid
resultset=singlerow
resultset=resultname=0; variablename=User::empid (empid is declared as string)
step2 - oracle database - created data flow task
created oledb source
I put  this statemnt in oraquery expression - "select * from dept where dept in  "
+  @[User::empid] + "
expression=true
[OLE DB Source [1]] Error: SSIS Error Code DTS_E_OLEDBERROR.  An OLE DB error has occurred. Error code: 0x80040E14.
An OLE DB record is available.  Source: "Microsoft OLE DB Provider for Oracle"  Hresult: 0x80040E14  Description: "ORA-00936: missing expression".
Approach-2
created three variables - oraquery string, empid  int, loop object--when I put int then it is automatically setting to 0
step1 - ms sql database - created sql task - SELECT  DISTINCT  convert(varchar(10),empid ) empid FROM emp
resultset=fullresult
resultset=resultname=0; variablename=User::loop
step2 - created a for each loop container
for loop editor - for each ado ennumerator
enumerator configuration - loop
variablemapping - variable=empid;index=0
step3 - oracle database - created data flow task (outside for each loop. If I put inside it is taking long time)
created oledb source
I put  this statemnt in oraquery expression - "select * from dept where dept in  "
+  @[User::empid] + "
expression=true
Data inserting in a destination table but  empid=0.

Answer 1

Sorry didnt understand if your step3 is outside loop how
@[User::empid] will get values for the empids from User::loop. The iteration happens inside loop so you
need to have a logic to form the delimited list inside using a script task or something and concatenating everything and storing to variable @[User::empid]
. Then only it will have full value used to be used in step3 query
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