4EETQ399 1 [ dbsloci.c,13255]: SAPUSER error or connect error 99=DBSL_ERR_DB, oerr=12518.

1 ETQ000 ==================================================
1 ETQ399 Executing SQL script '..\var\SQLDBSCRIPT.TQL'.
2 ETQ399 Connecting to database 'ora'.
3EETQ008 Error message: DBSL error 99 (db code -1): Connect failed
4EETQ399 1 [ dbsloci.c,13221]: Logon as OPS$-user to get SAPSR3's password
4EETQ399 1 [ dbsloci.c,16053]: Connecting as /@SOL
on connection 0 (nls 0) ... (dbsl 721 030315, UNICODE[2])
4EETQ399 1 [   dboci.c, 4491]: OCIHandleAlloc(con=0): Service svc=0B357960 created, rc=0
4EETQ399 1 [   dboci.c, 4154]:    OCIServerAttach(OCI_DEFAULT) failed with SQL error 12518:
4EETQ399 1 [   dboci.c, 4157]:    ORA-12518: TNS:listener could not hand off client connection                                                                 
4EETQ399 1 [   dboci.c, 4666]: OCIServerAttach(con=0, svc=0B357960): Error 12518 attaching new srv=0B357B40 to 'SOL'
4EETQ399 1 [   dboci.c, 4669]: OCIHandleFree(con=0): Server handle srv=0B357B40 freed.
4EETQ399 1 [   dboci.c, 4507]: OCIHandleFree(con=0): Service svc=0B357960 freed (i=0).
4EETQ399 1 [   dboci.c, 4511]: rc=12518 -> Trying to reattach to server 'SOL'
4EETQ399 1 [   dboci.c, 4491]: OCIHandleAlloc(con=0): Service svc=0B357960 created, rc=0
4EETQ399 1 [   dboci.c, 4154]:    OCIServerAttach(OCI_DEFAULT) failed with SQL error 12518:
4EETQ399 1 [   dboci.c, 4157]:    ORA-12518: TNS:listener could not hand off client connection                                                                 
4EETQ399 1 [   dboci.c, 4666]: OCIServerAttach(con=0, svc=0B357960): Error 12518 attaching new srv=0B357B40 to 'SOL'
4EETQ399 1 [   dboci.c, 4669]: OCIHandleFree(con=0): Server handle srv=0B357B40 freed.
4EETQ399 1 [   dboci.c, 4507]: OCIHandleFree(con=0): Service svc=0B357960 freed (i=1).
4EETQ399 0 [ dbsloci.c,16069]: CONNECT failed with SQL error '12518'
4EETQ399 1 [ dbsloci.c,13255]: SAPUSER error or connect error 99=DBSL_ERR_DB, oerr=12518.


Solution:

Wrong password combination of OPS$sapserviceSID in database and OPS$sapserviceSID on Oslevel,
make both password is same.,