ORA-12170 and TNS-12535

Question

Hi everyone
My servers are in a separate location and we are accessing our databases from my office.
The developers say that they couldn't access one particular db from their machine.
The errors they receive when they try to connect using some tool is:
TNS-12535 TNS:operation timed outWhen I request them to TNSPing or when they access from Sql Plus(instant client), this is the error they receive:
ORA-12170: TNS:Connect timeout occurredOne of the developers are using Oracle XE and he too faces the same scenario.
So, where should I trace this problem from.
We all could ping to the machine where the Oracle resides.
Please advice.
Thanks in advance.

Answer 1

I have done a trace on the client side and here is the output:
--- TRACE CONFIGURATION INFORMATION FOLLOWS ---
New trace stream is C:\temp\sqlnettrace_3860_1.trc
New trace level is 16
--- TRACE CONFIGURATION INFORMATION ENDS ---
--- PARAMETER SOURCE INFORMATION FOLLOWS ---
Attempted load of system pfile source C:\oraclexe\app\oracle\product\10.2.0\server\network\admin\sqlnet.ora
Parameter source loaded successfully
Attempted load of local pfile source C:\Program Files\Gyrasoft\SQL Samurai For Oracle\sqlnet.ora
Parameter source was not loaded
-> PARAMETER TABLE LOAD RESULTS FOLLOW <-
Successful parameter table load
-> PARAMETER TABLE HAS THE FOLLOWING CONTENTS <-
   TRACE_UNIQUE_CLIENT = ON
   TRACE_DIRECTORY_CLIENT = C:\temp
   SQLNET.AUTHENTICATION_SERVICES = (NTS)
   TRACE_TIMESTAMP_CLIENT = ON
   TRACE_LEVEL_CLIENT = 16
   TRACE_FILE_CLIENT = SQLNetTrace
--- PARAMETER SOURCE INFORMATION ENDS ---
--- LOG CONFIGURATION INFORMATION FOLLOWS ---
Log stream will be "C:\Program Files\Gyrasoft\SQL Samurai For Oracle\sqlnet.log"
Log stream validation not requested
--- LOG CONFIGURATION INFORMATION ENDS ---
nlstdipi: entry
nlstdipi: exit
nigini: entry
nigini: Count in the NL global area is now 1
nigini: Count in NI global area now: 1
nrigbi: entry
nrigbni: entry
nrigbni: Unable to get data from navigation file tnsnav.ora
nrigbni: exit
nrigbi: exit
nigini: exit
niqname: Hst is already an NVstring.
niqname: Inserting CID.
niotns: entry
snsbitini_ts: entry
snsbitini_ts: normal exit
snsbitini_ts: entry
snsbitini_ts: normal exit
niotns: Not trying to enable dead connection detection.
niotns: Calling address: (DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=xxx.xxx.x.xx)(PORT=1521)))(CONNECT_DATA=
(SERVER=DEDICATED)(SERVICE_NAME=test)(CID=(PROGRAM=C:\Program Files\Gyrasoft\SQL Samurai For Oracle\SQLSamuraiForOracle.exe)(HOST=Machine1)(USER=11111))))
nscall: entry
nsmal: entry
nsmal: 212 bytes at 0x98e50b0
nsmal: normal exit
nscall: connecting...
nladini: entry
nladini: exit
nladget: entry
nladget: exit
nsc2addr: entry
nsc2addr: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=xxx.xxx.x.xx)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)
(SERVICE_NAME=test)(CID=(PROGRAM=C:\Program Files\Gyrasoft\SQL Samurai For Oracle\SQLSamuraiForOracle.exe)(HOST=Machine1)(USER=11111))))
nttbnd2addr: entry
snlinGetAddrInfo: entry
snlinGetAddrInfo: exit
nttbnd2addr: using host IP address: xxx.xxx.x.xx
snlinFreeAddrInfo: entry
snlinFreeAddrInfo: exit
nttbnd2addr: exit
nsc2addr: normal exit
nsopen: entry
nsmal: entry
nsmal: 736 bytes at 0x98e6380
nsmal: normal exit
nsopenmplx: entry
nsmal: entry
nsmal: 1644 bytes at 0x98e7fc0
nsmal: normal exit
snsbitini_ts: entry
snsbitini_ts: normal exit
nsiorini: entry
nsbal: entry
nsbgetfl: entry
nsbgetfl: normal exit
nsmal: entry
nsmal: 84 bytes at 0x98e5218
nsmal: normal exit
nsbal: normal exit
nsiorini: exit (0)
nscpxget: entry
snsbitts_ts: entry
snsbitts_ts: acquired the bit
snsbitts_ts: normal exit
snsbitcl_ts: entry
snsbitcl_ts: normal exit
nscpxget: normal exit
nsopenalloc_nsntx: nlhthput on mplx_ht_nsgbu:ctx=98e6380, nsntx=98e7fc0
nsopenmplx: normal exit
nsopen: opening transport...
nttcon: entry
nttcon: toc = 1
nttcnp: entry
nttcnp: creating a socket.
nttcnp: exit
nttcni: entry
nttcni: trying to connect to socket 900.
ntt2err: entry
ntt2err: soc 900 error - operation=1, ntresnt[0]=505, ntresnt[1]=60, ntresnt[2]=0
ntt2err: exit
nttcni: exit
nttcon: exit
nserror: entry
nserror: nsres: id=0, op=65, ns=12535, ns2=12560; nt[0]=505, nt[1]=60, nt[2]=0; ora[0]=0, ora[1]=0, ora[2]=0
nsopen: unable to open transport
snsbitts_ts: entry
snsbitts_ts: acquired the bit
snsbitts_ts: normal exit
snsbitcl_ts: entry
snsbitcl_ts: normal exit
nsiocancel: entry
nsiofrrg: entry
nsbfr: entry
nsbaddfl: entry
nsbaddfl: normal exit
nsbfr: normal exit
nsiofrrg: exit
nsiocancel: exit
nsopenfree_nsntx: nlhthdel from mplx_ht_nsgbu, ctx=98e6380 nsntx=98e7fc0
nsiocancel: entry
nsiofrrg: entry
nsiofrrg: exit
nsiocancel: exit
snsbittrm_ts: entry
snsbittrm_ts: normal exit
snsbitts_ts: entry
snsbitts_ts: acquired the bit
snsbitts_ts: normal exit
snsbitcl_ts: entry
snsbitcl_ts: normal exit
nsmfr: entry
nsmfr: 1644 bytes at 0x98e7fc0
nsmfr: normal exit
nsmfr: entry
nsmfr: 736 bytes at 0x98e6380
nsmfr: normal exit
nsopen: error exit
nsclose: entry
nsclose: normal exit
nladget: entry
nladget: exit
nsmfr: entry
nsmfr: 212 bytes at 0x98e50b0
nsmfr: normal exit
nladtrm: entry
nladtrm: exit
nscall: error exit
nioqper:  error from nscall
nioqper:    ns main err code: 12535
nioqper:    ns (2)  err code: 12560
nioqper:    nt main err code: 505
nioqper:    nt (2)  err code: 60
nioqper:    nt OS   err code: 0
niomapnserror: entry
niqme: entry
niqme: reporting NS-12535 error as ORA-12535
niqme: exit
niomapnserror: exit
niotns: Couldn't connect, returning 12170
nioqer: entry
nioqer:  incoming err = 12170
nioqce: entryCould someone please throw some light on this?