title: ERROR: 'ORA-01805: possible error in date/time operation' despite having same versions of DB in client and server
body: <p>I am trying to connect to a remote Oracle DB using ROracle from the client side. </p>
  
  <p>After establishing connection, I execute this query:</p>
  
  <pre><code>dat = dbGetQuery(con, "SELECT * FROM TABLE_01")
  </code></pre>
  
  <p>This leads to the error:</p>
  
  <blockquote>
    <p>Error in .oci.GetQuery(conn, statement, data = data, prefetch = prefetch,  : 
      Error in try({ : ORA-01805: possible error in date/time operation</p>
  </blockquote>
  
  <p>I checked the DB version in server side:</p>
  
  <pre><code>SELECT * FROM V$VERSION
  
  PL/SQL Release 11.2.0.4.0 - Production
  CORE    11.2.0.4.0  Production
  TNS for Linux: Version 11.2.0.4.0 - Production
  NLSRTL Version 11.2.0.4.0 - Production
  </code></pre>
  
  <p>Then I ran genezi in client side:</p>
  
  <pre><code>    genezi -v
  
  System name:    Linux
  Release:        4.4.0-36-generic
  Version:        #55-Ubuntu SMP Thu Aug 11 18:01:55 UTC 2016
  Machine:        x86_64
  
  Operating in Instant Client mode.
  Small timezone file = timezone_14.dat
  Large timezone file = timezlrg_14.dat
  </code></pre>
  
  <p>The Oracle version of both client and server is 11.2. But the timezone file seems to be different. How to fix this issue?</p>