re: ORA-17055 ?

ok.... I better rephrase the problem:
  we're having an intermittent problem on a setup of Apache 1.3.46 and Weblogic 8.2 and Oracle 9.2.0.6 in that we receive HTTP 500 errors with servers being even at low loads (5 concurrent OLTP users of somewhat heavier IO transactions). The app works about 99% of the time however with more users, more load, it starts failing. We've tried toying with pretty much every timeout parameter we thought of, in both Apache and Weblogic but to no avail...    

  Next, I'm trying to isolate the DB out of the equation by just having dummy (non-db) transactions, so hopefully that will yield something ;-)    

  or perhaps, for test, I need to put all three servers on the same box ;-)    

  something's gotta give! LOL    

  thx,
  Cosmin   

Norman Dunbar <norman.dunbar_at_environment-agency.gov.uk> wrote:   

Morning Cosmin,

> cosmin ioan 10/18/06 03:12am >>>
> ORA-17055
> Invalid character encountered in

> hi guys, has anyone encountered this in JDBC apps?
No, I'm afraid not.

> -- not very well documented in Oracle and I'm not a Java
> developer ;-)

Neither am I and I never will be. For some reason, I simply loathe Java.

Having said that, the usual cause (in my code anyway) is simply having a semi-colon in the SQL statement as in something like this statement.parse('select stuff from dual ; ');

The semi-colon usually gives the problem.

> not sure what to make of it and don't know if it has anything to do
with some tables' columns
> being defined as varchar2( x byte) vs varchar2(x)...

I shouldn't think that that's a problem as it is perfectly valid - especially as the table is already created (isn't it ?) in the database.

If you can recreate the problem at will, shove a 10046 trace on the session (or use DBMS_SUPPORT.START_TRACE_IN_SESSION(sid, serial#, false,false) and scan the resulting trace file (after you recreate the problem) for an ERROR line. That's the cursor and statement that is giving you grief. You'll probably find it fails on the PARSE phase. DBMS_SUPPORT.STOP_TARCE_IN_SESSION(sid,serial#) turns tracing off - if the session hasn't ended by then. (connect as sys and start ?/rdbms/admin/dbsmsupp.sql to install it for SYS use only.)

HTH Cheers,
Norman.

Norman Dunbar.
Contract Oracle DBA.
Rivers House, Leeds.

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