Help: ORA-12560: TNS:protocol adapter error

Question

I created a new database and afterwards my established TNS connection to my starter database was lost. Now I cant get it to work. I tired deleting the new database I created, but my old connection with my starter db still does not work. When I test the connection using the NET 8 assistant I get the following error: ORA-12560: TNS:protocol adapter error.
Im fairly new to Oracle8i and Ive posted numerous threads elsewhere concerning my problem but so far I havent gotten a solution. Any ideas?
Thanks, Andrew
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Answer 1

Edwin,
1. I can ping my server.
2. I reinstalled Oracle8i entirely on the server I still could not connect.
3. I installed Oracle8i client on a totally new client I still could not connect.
On thing though, when I de-installed all Oracle products and then reinstalled Oracle, some of my settings from the previous install still existed. Ex: When I opened Net 8 Assistant some of my Net Service Names remained from the previous install.
Three things I think I can rule out as causes:
a) It seems really significant that from the server I can successfully connect through the TNS connection. And this is using the exact same TNANAMES.ORA file that is on my client machine. This leads me to believe that my TNSNAMES.ORA file is not the cause of the problem.
b) Also the fact that the new client install (3) didnt work makes me think for sure that it is not the client.
c) When I open SQL Plus on the server I type ORACLE4 for the host string and I get right in. This leads me to believe that the instance and database can be ruled out as possible causes.
In the Oracle Client Net8 Profile section I set tracing to on. I am posting the results. Also FYI: I am the only person that has been working with Oracle on the server. Any ideas??? Andrew
--- TRACE CONFIGURATION INFORMATION FOLLOWS ---
New trace stream is "C:\Oracle\Ora81\NETWORK\trace\sqlnet79.trc"
New trace level is 4
--- TRACE CONFIGURATION INFORMATION ENDS ---
nigini: Count in NI global area now: 1
nigini: Count in NI global area now: 1
nrigbni: Unable to get data from navigation file tnsnav.ora
niotns: niotns: setting up interrupt handler...
niotns: Not trying to enable dead connection detection.
niotns: Calling address: (DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=BEQ)(PROGRAM=oracle)(ARGV0=oracleORCL)(ARGS='(DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))')))(CONNECT_DATA=(SID=ORCL)(CID=(PROGRA M=C:\PROGRAM FILES\ORACLE\JRE\1.1.7\BIN\JREW.EXE)(HOST=ANDY)(USER=andrew))))
nscall: connecting...
nsopen: opening transport...
nserror: nsres: id=0, op=65, ns=12547, ns2=12560; nt[0]=517, nt[1]=0, nt[2]=0
nsopen: unable to open transport
nioqper: error from nscall
nioqper: nr err code: 0
nioqper: ns main err code: 12547
nioqper: ns (2) err code: 12560
nioqper: nt main err code: 517
nioqper: nt (2) err code: 0
nioqper: nt OS err code: 0
niqme: reporting ns (2) error: (12547) as rdbms err (12547)
niotns: Couldn't connect, returning 12547
nigtrm: Count in the NI global area is now 0
nigtrm: Count in the NL global area is now 0
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by ekessels (Edwin Kessels):
Try to install the Net8 Server and Client again. Also make sure you can ping the IP-adres of servername using the PING-command.
Edwin Kessels
OCP-DBA
<HR></BLOCKQUOTE>
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