Instant Client Fails With ORA-1805 or ORA-1804 and Ignores ORA_TZFILE Setting
(Doc ID 2112340.1)
Last updated on MARCH 02, 2019
Applies to:Oracle Database - Enterprise Edition - Version 220.127.116.11 to 18.104.22.168 [Release 11.2 to 12.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.
1) Receiving ORA-01805 error when attempting to connect to a database which is using the version 20 time zone file (timezlrg_20.dat).
2) Failing application is using the 11.2.0.x.0 or 12.1.0.x Instant Client and the timezone_14.dat file.
An example of using the 11.2 genezi utility shows the version, and the version of the timezone file:
Client Shared Library 64-bit - 22.214.171.124.0
System name: Linux
Version: #1 SMP Thu May 16 20:59:36 UTC 2013
Operating in Instant Client mode.
Small timezone file = timezone_14.dat
Large timezone file = timezlrg_14.dat
If you attempt to set the Time Zone File using ORA_TZFILE and setting it to the path of the timezlrg_20.dat file, then sqlplus or client fails to start with the error code ORA-01804 and fails to synchronize timezone information.
Further testing suggests that it is not reading the file.
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