Ora connection errors

Hello!
My team and I are developing an application which works a lot with oracle database using the OCI libraries. When a call to the database fails(select, insert...) we want a retry, except when the first call failed due to a data or function error. In fact, we want a reconnect, when the connection to the database has been closed or failed.
So how is it possible to recognise that the error is a connection related error? I thougt of checking the range the ora error code is in, but I found that they are spread over the whole range (03135 to 30678).
Kind Regards
Wolfram Haußig

The return value status of each OCI call can be with OCI_INVALID_HANDLE status for database shutdown /connection failure errors.
prajith

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Hi all,
I have a oracle client and server with FIPS enabled on them. When I use SQL Developer from the client, I can connect to the server and run queries on them.
I have an ADO based application, which I am trying to run on the client to query the oracle server, but the open database call seems to fail on this with the ORA-12699 error ..
Heres the connection string I am using ... "Provider=OraOLEDB.Oracle;Data Source=Test;User Id=scott;Password=tiger;"
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--sachi

Naveen,
Forms 5.0 is not certified and not tested with Oracle DB 10g because it was desupported before 10g got released.
The other problem is hard to give a generic answer for and I suggest to address this to metalink.oracle.com
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ORA-12154 Error - NET8 Connection Tester Works Though

I have copied over a tnsnames.ora file from another machine I know that works fine. It has one Oracle home.
When I try to connect via SQLPlus or Oracle DBA studio, I get told that it cannot resolve the service name and the ORA-12154 error. However, when I go into Net8 Assistant and test the connection, it work without an issue no matter what login/password I use, from a developers to the system login and password.
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ORA-25228 error occurs when Foreign JMS Server connecting to the Oracle AQ

Hi,
I configure of a Foreign JMS Server that uses the Oracle JDBC Driver to connect to the AQ Topic. I use OSB messaging proxy service as a JMS client to connect the Foreign JMS Server. After the launch, I get the following error:
####<Jan 30, 2013 4:51:49 AM MSK> <Error> <EJB> <EPRUSARW0520> <osb_server1> <RequestEJB7826682746890400115XX35047bed.13c85602eea.X7f53> <<anonymous>> <> <0000Jm8w2Es6qI_5xRh8iW1H1sMk0001sD> <1359507109078> <BEA-010079> <An error occurred while attempting to receive a message from JMS for processing by a message-driven bean: oracle.jms.AQjmsException: JMS-120: Dequeue failed
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ORA-06502: PL/SQL: numeric or value error
ORA-06512: at line 11
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     at oracle.jms.AQjmsConsumer.receiveFromAQ(AQjmsConsumer.java:960)
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     at weblogic.ejb.container.internal.JMSConnectionPoller.doPrivilegedJMSAction(JMSConnectionPoller.java:2752)
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     at weblogic.ejb.container.internal.JMSMessagePoller.pollContinuously(JMSMessagePoller.java:351)
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     at weblogic.ejb.container.internal.JMSMessagePoller.run(JMSMessagePoller.java:499)
     at java.lang.Thread.run(Thread.java:722)
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ORA-06502: PL/SQL: numeric or value error
ORA-06512: at line 11
ORA-25228: timeout or end-of-fetch during message dequeue from MDM.ALL_NSI
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     at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:389)
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     at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:481)
     at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:205)
     at oracle.jdbc.driver.T4Caqdq.doOAQDQ(T4Caqdq.java:183)
     at oracle.jdbc.driver.T4CConnection.doDequeue(T4CConnection.java:4704)
     at oracle.jdbc.driver.PhysicalConnection.dequeue(PhysicalConnection.java:17863)
     at oracle.jdbc.driver.PhysicalConnection.dequeue(PhysicalConnection.java:17949)
     at oracle.jdbc.OracleConnectionWrapper.dequeue(OracleConnectionWrapper.java:1624)
     at weblogic.jdbc.wrapper.XAConnection_oracle_jdbc_driver_LogicalConnection.dequeue(Unknown Source)
     at weblogic.jdbc.wrapper.JTAConnection_weblogic_jdbc_wrapper_XAConnection_oracle_jdbc_driver_LogicalConnection.dequeue(Unknown Source)
     at oracle.jms.AQjmsConsumer.jdbcConnectionDequeueCheck25242(AQjmsConsumer.java:1713)
     at oracle.jms.AQjmsConsumer.jdbcDequeue(AQjmsConsumer.java:1295)
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Request help to resolve this.
Thanks in advance.
Regards
Alexander.

Maybe this can help: http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::p11_question_id:4018285967344

ORA-28545: error diagnosed by Net8 when connecting to an agent Unable to retrieve text of NETWORK/NCR message 65535

Hello All,
I have verified entire otn community, but none of the solution working for me and hence posting this problem. I'm getting below error message when I try to connect from oracle 11g to sqlserver database. All details are given below and request some body to provide resolution.
Oracle 11 g server installed in "Red Hat Enterprise Linux Server release 6.3"
Sqlserver running in Windows server enterprise 64bit OS.
$ cat initdg4msql.ora
# This is a customized agent init file that contains the HS parameters
# that are needed for the Database Gateway for Microsoft SQL Server
# HS init parameters
HS_FDS_CONNECT_INFO=[SJCGNMWQA2WEB01]:SQLEXPRESS//msdb
# alternate connect format is hostname/serverinstance/databasename
HS_FDS_TRACE_LEVEL=OFF
HS_FDS_RECOVERY_ACCOUNT=RECOVER
HS_FDS_RECOVERY_PWD=RECOVER
$ cat listener.ora
# listener.ora Network Configuration File: /home/oracle/11g/product/11/network/admin/listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
    (SID_DESC =
     (SID_NAME = dg4msql)
     (ORACLE_HOME = /home/oracle/11g/product/11)
     (PROGRAM = dg4msql)
$ cat tnsnames.ora
# tnsnames.ora Network Configuration File: /home/oracle/11g/product/11/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.
GNMDB =
(DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = sjcgnm62v2db1.skta.com)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = GNMDB)
dg4msql =
(DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = sjcgnm62v2db1.skta.com)(PORT = 1521))
    (CONNECT_DATA = (SID = msdb))
    (HS = OK)
LISTENER =
(DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = sjcgnm62v2db1.skta.com)(PORT = 1521))
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
ADR_BASE_LISTENER = /home/oracle/11g
Output of lsnrctl start
$ lsnrctl start
LSNRCTL for Linux: Version 11.2.0.3.0 - Production on 22-NOV-2013 15:17:08
Copyright (c) 1991, 2011, Oracle. All rights reserved.
Starting /home/oracle/11g/product/11/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 11.2.0.3.0 - Production
System parameter file is /home/oracle/11g/product/11/network/admin/listener.ora
Log messages written to /home/oracle/11g/diag/tnslsnr/sjcgnm62v2db1/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=sjcgnm62v2db1.skta.com)(PORT=1521)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=sjcgnm62v2db1.skta.com)(PORT=1521)))
STATUS of the LISTENER
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.3.0 - Production
Start Date                22-NOV-2013 15:17:08
Uptime                    0 days 0 hr. 0 min. 0 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /home/oracle/11g/product/11/network/admin/listener.ora
Listener Log File         /home/oracle/11g/diag/tnslsnr/sjcgnm62v2db1/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=sjcgnm62v2db1.skta.com)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
Services Summary...
Service "dg4msql" has 1 instance(s).
Instance "dg4msql", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
SQL> CREATE PUBLIC DATABASE LINK sqlserver CONNECT TO "sa" IDENTIFIED BY "gnm123" USING 'dg4msql';
Database link created.
SQL> select * from dual@sqlserver;
select * from dual@sqlserver
ERROR at line 1:
ORA-28545: error diagnosed by Net8 when connecting to an agent
Unable to retrieve text of NETWORK/NCR message 65535
ORA-02063: preceding 2 lines from SQLSERVER
SQL> select * from "sys"."tables"@sqlserver;
select * from "sys"."tables"@sqlserver
ERROR at line 1:
ORA-28545: error diagnosed by Net8 when connecting to an agent
Unable to retrieve text of NETWORK/NCR message 65535
ORA-02063: preceding 2 lines from SQLSERVER
Pl help.

Hi Klaus,
I just pick the gateway 11.2.0.3 patch to the installation. Here I got error and patch installation failed.
[oracle@sjcgnm62v2db1 13092292]$ opatch apply
Invoking OPatch 11.2.0.1.7
Oracle Interim Patch Installer version 11.2.0.1.7
Copyright (c) 2011, Oracle Corporation. All rights reserved.
Oracle Home       : /home/oracle/11g/product/11
Central Inventory : /home/oracle/oraInventory
   from           : /etc/oraInst.loc
OPatch version    : 11.2.0.1.7
OUI version       : 11.2.0.3.0
Log file location : /home/oracle/11g/product/11/cfgtoollogs/opatch/opatch2013-11-26_12-41-27PM.log
Applying interim patch '13092292' to OH '/home/oracle/11g/product/11'
Verifying environment and performing prerequisite checks...
Prerequisite check "CheckApplicable" failed.
The details are:
Patch 13092292: Required component(s) missing : [ oracle.rdbms.tg4db2, 11.2.0.3.0 ]
[ Error during Prerequisite for apply Phase]. Detail: ApplySession failed during prerequisite checks: Prerequisite check "CheckApplicable" failed.
Log file location: /home/oracle/11g/product/11/cfgtoollogs/opatch/opatch2013-11-26_12-41-27PM.log
Recommended actions: This patch requires some components to be installed in the home. Either the Oracle Home doesn't have the components or this patch is not suitable for this Oracle Home.
OPatch failed with error code 39
[oracle@sjcgnm62v2db1 13092292]$
Pl help.

Database connection error ORA-01034 oracle not available

Hi
Can some one help me out from this probs. I have a oracle8.15 enterprize edition running on solaris 5.6. It's been running fine since few months from deffent clients. But today its giving ORA-01034 error when i try to connect to database from cliend side. I found that database is up and running and we can access it on server. But from client i am getting the above error. Oracle documentation shows " The operating system variable pointing to the instance is improperly defined".
I would aprreciate if some body helps out of this problem.
Thanks in advance
K. Srinivas

Hi,
Oracle uses the ORACLE_HOME and ORACLE_SID variables to create a unique shared memory hash key for each instance.
This problem can happen if your environment variables are set differently when the database is started compared to the user who is getting the error. The error indicates that the executable (sqlplus, svrmgrl) can't find the shared memory segment, which means that the ORACLE_HOME variable is not set correctly somewhere.
Bye,
atul

ORA-28545: error diagnosed by Net8 when connecting to an agent

Dear all,
This question has been asked many times in this forum, and I have gone to many threads in this forum, but unfortunately i failed.
I want to connect to MySQL database from oracle. I have the following configurations.
Oracle database enterprise edition 12c (12.1.0.2.0) 64bit on Windows server 2012 64bit
i have MySQL 5.6.11 on windows 7 64bit
i have downloaded ODBC driver from oracle delivery site (MySQL Connector/ODBC 5.3.4 MSI for Windows x86 (64bit))
i install the ODBC on my oracle server, a full installation which install the Unicode and Ansi versions both.
i create ODBC connection for Unicode by going to Control Panel-->Administrator Tools-->ODBC Data Sources (64-bit)-->System DSN. i test it and the test was successful.
i configure my Listner.ora, Tnsname.ora and initmysql.ora files as below;
Listner.ora
SID_LIST_LISTENER =
(SID_LIST =
   (SID_DESC =
   (SID_NAME = CLRExtProc)
   (ORACLE_HOME = c:\app\Administrator\product\12.1.0\dbhome_1)
   (PROGRAM = extproc)
   (ENVS = "EXTPROC_DLLS=ONLY:c:\app\Administrator\product\12.1.0\dbhome_1\bin\oraclr12.dll")
(SID_DESC=
   (SID_NAME = mysql)
   (ORACLE_HOME = C:\app\Administrator\product\12.1.0\dbhome_1)
   (PROGRAM = dg4odbc)
   (ENVS=LD_LIBRARY_PATH = C:\app\Administrator\product\12.1.0\dbhome_1\LIB)
LISTENER =
(DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = ORADEV.hct.org)(PORT = 1521))
Tnsnames.ora
PDBORCL =
(DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = ORADEV.hct.org)(PORT = 1521))
    (CONNECT_DATA =
      (SERVICE_NAME = pdborcl.hct.org)
ORCL =
(DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = ORADEV.hct.org)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl.hct.org)
mysql =
(DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = N410FS02)(PORT = 1521))
    (CONNECT_DATA =
    (SID = mysql)
    (HS = OK)
initmysql.ora ( C:\app\Administrator\product\12.1.0\dbhome_1\hs\admin\)
HS_FDS_CONNECT_INFO = mysql
HS_FDS_TRACE_LEVEL = OFF
then i stop and start the listener, the listener status is below
LSNRCTL for 64-bit Windows: Version 12.1.0.2.0 - Production on 23-APR-2015 09:16
:52
Copyright (c) 1991, 2014, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=ORADEV.hct.org)(PORT=152
1)))
STATUS of the LISTENER
Alias                     LISTENER
Version                   TNSLSNR for 64-bit Windows: Version 12.1.0.2.0 - Produ
ction
Start Date                23-APR-2015 09:13:56
Uptime                    0 days 0 hr. 2 min. 59 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   c:\app\Administrator\product\12.1.0\dbhome_1\network\a
dmin\listener.ora
Listener Log File         c:\app\Administrator\diag\tnslsnr\ORADEV\listener\aler
t\log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ORADEV.hct.org)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "mysql" has 1 instance(s).
Instance "mysql", status UNKNOWN, has 1 handler(s) for this service...
Service "orcl.hct.org" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
Service "orclXDB.hct.org" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
Service "pdborcl.hct.org" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
The command completed successfully
tnsping MySQL
TNS Ping Utility for 64-bit Windows: Version 12.1.0.2.0 - Production on 23-APR-2
015 09:17:54
Copyright (c) 1997, 2014, Oracle. All rights reserved.
Used parameter files:
c:\app\Administrator\product\12.1.0\dbhome_1\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = N410FS02
)(PORT = 1521)) (CONNECT_DATA = (SID = mysql)) (HS = OK))
OK (40 msec)
then i open sqlplus and connect to my pluggable database as sys user and create a public database link for the test schema which i already created in MySQL database.
create public database link mysql connect to test identified by test using 'mysql';
then i try the table1 which is in test schema in MySQL from sqlplus as below
SQL> select * from table1@mysql;
select * from table1@mysql
ERROR at line 1:
ORA-28545: error diagnosed by Net8 when connecting to an agent
Unable to retrieve text of NETWORK/NCR message 65535
ORA-02063: preceding 2 lines from MYSQL
i have tried both the Ansi and Unicode versions of ODBC but the same issue.
where is the problem in my configuration?
Thank you.

ODBC
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\ODBC]
[HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\ODBC.INI]
[HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\ODBC.INI\mysql]
"Driver"="C:\\Program Files\\MySQL\\Connector ODBC 5.3\\myodbc5w.dll"
"SERVER"="10.153.102.98"
"UID"="test"
"PWD"="test"
"PORT"="3306"
[HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\ODBC.INI\ODBC Data Sources]
"mysql"="MySQL ODBC 5.3 Unicode Driver"
[HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\ODBCINST.INI]
[HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\ODBCINST.INI\MySQL ODBC 5.3 ANSI Driver]
"UsageCount"=dword:00000001
"Driver"="C:\\Program Files\\MySQL\\Connector ODBC 5.3\\myodbc5a.dll"
"Setup"="C:\\Program Files\\MySQL\\Connector ODBC 5.3\\myodbc5S.dll"
[HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\ODBCINST.INI\MySQL ODBC 5.3 Unicode Driver]
"UsageCount"=dword:00000001
"Driver"="C:\\Program Files\\MySQL\\Connector ODBC 5.3\\myodbc5w.dll"
"Setup"="C:\\Program Files\\MySQL\\Connector ODBC 5.3\\myodbc5S.dll"
[HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\ODBCINST.INI\ODBC Core]
"UsageCount"=dword:00000001
[HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\ODBCINST.INI\ODBC Drivers]
"SQL Server"="Installed"
"Oracle in OraDB12Home1"="Installed"
"MySQL ODBC 5.3 ANSI Driver"="Installed"
"MySQL ODBC 5.3 Unicode Driver"="Installed"
[HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\ODBCINST.INI\ODBC Translators]
[HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\ODBCINST.INI\Oracle in OraDB12Home1]
"APILevel"="1"
"CPTimeout"="60"
"ConnectFunctions"="YYY"
"Driver"="c:\\app\\Administrator\\product\\12.1.0\\dbhome_1\\BIN\\SQORA32.DLL"
"DriverODBCVer"="03.51"
"FileUsage"="0"
"Setup"="c:\\app\\Administrator\\product\\12.1.0\\dbhome_1\\BIN\\SQORAS32.DLL"
"SQLLevel"="1"
[HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\ODBCINST.INI\SQL Server]
"CPTimeout"="60"
"SQLLevel"="1"
"DriverODBCVer"="03.50"
"APILevel"="2"
"ConnectFunctions"="YYY"
"Setup"=hex(2):25,00,57,00,49,00,4e,00,44,00,49,00,52,00,25,00,5c,00,73,00,79,\
00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,73,00,71,00,6c,00,73,00,72,00,\
76,00,33,00,32,00,2e,00,64,00,6c,00,6c,00,00,00
"UsageCount"=dword:00000001
"Driver"=hex(2):25,00,57,00,49,00,4e,00,44,00,49,00,52,00,25,00,5c,00,73,00,79,\
00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,53,00,51,00,4c,00,53,00,52,00,\
56,00,33,00,32,00,2e,00,64,00,6c,00,6c,00,00,00
"FileUsage"="0"
Thanks

TNS Ora-12532 error When connecting with Db11 running in the VM

I created a virtual machine from the PVM Entrerprise Linux 5 64 bits and db11g.
Inside the virtual Machine the sqlplus system/manager1@VDB11 is working well.
The tnsping 172.20.0.33 is working well too.
But from the other external machine using oracle 11g client these command are not working: Tns Ora-12532 error.
What to do?
Thanks

my virtual machine: vm1 have an static ip address 172.20.0.33
the oracle listener is was configured with the same ip
in the virtual machine : vm1 the /etc/hosts file content is:
127.0.0.1 localhost.localdomain
172.20.0.33 virtualdb11
in the tnsnames.ora file in the virtual machine i have a service:
VDB11 ...( host=172.20.0.33) (port=1521)
under console connection with my virtual machine vm1 the command : sqlplus system/manager1@VDB11 is working well
but when i working in an other external machine , where the tnsnames.ora have an entry:
VDB11 ...(host=172.20.0.33)......
the ping command : ping 172.20.0.33 is working well
but sqlplus system/manager1@VDB11 is not work and return the error:
ora-12532 tns

ORA-12514 error while connecting to server

I am using instantclient to connect to Oracle 9i server.
The connection string is given using this format
//host:[port][service name].
In our development environment we can successfully connect to the server. But the connection fails in the production environment giving ORA-12514 error. This occurs even when we copy the instant client dll's onto separate folder and set the library loading path to this folder.
Can u please help me in resolving this problem.

Vinay,
Since you are using Windows, are you setting PATH (the lib loading path of Windows)?

ORA-28545: error diagnosed by Net8 when connecting to an agent error

Hi,
I've to setup the Oracle Gateway service in order to access the SQL Server 2005 db from Oracle11g 11.1.0.7.0 db which is running on a LINUX os.
Basically, i've to periodically PULL data from SQL Server to oracle.
Have done the necessary setup as specified in Oracle docs.
1. Oracle ini file: initdg4msql.ora
HS_FDS_CONNECT_INFO=999.168.0.1:1433//SqlServerDb
HS_FDS_TRACE_LEVEL=OFF
HS_FDS_RECOVERY_ACCOUNT=sqlserver_user_id
HS_FDS_RECOVERY_PWD=sqlserver_user_password
2. listener.ora entry
LISTENER_GATEWAY =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = oracle.portal.internal)(PORT = 1522))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1522))
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = OBIM1)
(ORACLE_HOME = /app/oracle/product/11.1.0/db_1)
(SID_DESC =
(SID_NAME = dg4msql)
(ORACLE_HOME = /app/oracle/product/11.1.0/db_1)
(ENVS=LD_LIBRARY_PATH=/app/oracle/product/11.1.0/db_1/dg4msql/driver/lib;/app/oracle/product/11.1.0/db_1/lib)
(PROGRAM = dg4msql)
3. tnsnames.ora entry
dg4msql =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = tcp)(HOST = oracle.portal.internal)(PORT = 1522))
(CONNECT_DATA =(SID = dg4msql))
(HS = OK)
4. Create database link on oracle
create public database link sqlserver connect to "sqlserver_user_id" identified by "sqlserver_user_password" using 'dg4msql';
Database link created.
Upon the completion of the configuration, I did the following and all are successful and working:
- starting the listener by
lsnrctl start LISTENER_GATEWAY
- tnsping my gateway
tnsping dg4msql
However, when I tried to retreive data and got the following error:
SQL> desc myTestingTable@sqlserver;
ERROR:
ORA-28545: error diagnosed by Net8 when connecting to an agent
Unable to retrieve text of NETWORK/NCR message 65535
ORA-02063: preceding 2 lines from SQLSERVER
I have stepped through the doc of "How to Setup DG4MSQL (Oracle Database Gateway for MS SQL Server) Release 11" but unable to figure out where the error lies.
Any inputs on this?? please help, I am in urgent.

Hi Mike,
As suggested, I have tried both formats with the spaces at the front. When I tried to start the listener, still get the error as show below:
Starting /app/oracle/product/11.1.0/db_1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 11.1.0.7.0 - Production
System parameter file is /app/oracle/product/11.1.0/db_1/network/admin/listener.ora
Log messages written to /app/oracle/diag/tnslsnr/p1db01/listener_gateway/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=oracle.portal.internal)(PORT=1522)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1522)))
TNS-01155: Incorrectly specified SID_LIST_LISTENER_GATEWAY parameter in LISTENER.ORA
NL-00305: the specified path name does not exist
As answers to your points -
- you have the HOST defined as -
(HOST = oracle.portal.internal)
is this the actual host name or did you change it to hide it in the post ?
*** It is just a mark up host for security reason
- what happens if you use the IP address instead of the hostname ?
*** Have tried the IP address but same error
- is the gateway installed in the directory /app/oracle/product/11.1.0/db_1 ?
*** Yes
- can you set up listener level 16 tracing and check the trace file for further information about the errors ? Add this to the listener.ora file -
trace_level_listener=16
and start the listener.
*** Have added the trace level 16 and tried to start the listener but same error. Please refer the snapshot from the log.xml. Please note that the host_id "oracle" is just a make-up.
<txt>Listener completed notification to CRS on start
</txt>
</msg>
<msg time='2010-04-17T15:37:56.544+10:00' org_id='oracle' comp_id='tnslsnr'
type='UNKNOWN' level='16' host_id='oracle'
host_addr='99.999.99.99'>
<txt>
TIMESTAMP * CONNECT DATA [* PROTOCOL INFO] * EVENT [* SID] * RETURN CODE
</txt>
</msg>
<msg time='2010-04-17T15:37:56.545+10:00' org_id='oracle' comp_id='tnslsnr'
type='UNKNOWN' level='16' host_id='oracle'
host_addr='10.254.84.32'>
<txt>TNS-01155: Incorrectly specified SID_LIST_LISTENER_GATEWAY parameter in LISTENER.ORA
NL-00305: the specified path name does not exist
</txt>
</msg>
- I have repeated the same steps above by changing the SID_LIST_LISTENER_GATEWAY back to SID_LIST_LISTENER parameter in LISTENER.ORA
The listener can be started but back to square one with ORA-28545 error as show below:
SQL> desc myTestingTable@sqlserver;
ERROR:
ORA-28545: error diagnosed by Net8 when connecting to an agent
Unable to retrieve text of NETWORK/NCR message 65535
ORA-02063: preceding 2 lines from SQLSERVER
Thanks

ORA-12535 error but TNSPing Works and listener logs connection

We recently migrated our firewall and then started seeing this problem for users outside of our own subnet. However, although the user gets this error when launching the application, the workstation is able to TNSPing the server successfully and listener.log does log the connection.
I was hoping someone might have some ideas or suggestions as to what might be causing the error despite the apparent connectivity to the database.
Thanks in advance.

Thanks so much for the suggestions.
1. telnet <host> 1521 connects
2. sqlplus <username>/<pwd>@<instance> returns the ORA-12535 error
Finally, the sqlnet.log on the client side doesn't log anything when launching the application so I have no information as to what exactly is occurring at that point. However, the sqlplus command above logged the following:
VERSION INFORMATION:
TNS for 32-bit Windows: Version 9.2.0.1.0 - Production
Windows NT TCP/IP NT Protocol Adapter for 32-bit Windows: Version 9.2.0.1.0 - Production
Time: 26-JAN-2007 08:43:41
Tracing not turned on.
Tns error struct:
nr err code: 0
ns main err code: 12535
TNS-12535: TNS:operation timed out
ns secondary err code: 12560
nt main err code: 505
TNS-00505: Operation timed out
nt secondary err code: 60
nt OS err code: 0
I've been doing more research on this -- please note that I'm not an Oracle dba so I am just getting familiar with lots of things -- and have learned that user connect requests come in through 1521 but are then randomly redirected to other ports. Given the new firewall, I'm wondering if it's an issue that the random ports being selected aren't open for the users outside of our subnet. Does this sound like a plausible explanation? If so, how do administrators generally handle this -- by opening the necessary ports on the firewall? Is there some other standard approach?
Again, thanks so much for any assistance you can provide.

Once again - ORA-28545: error diagnosed by Net8 when connecting to an agent

I'm trying to connect to a SQL server 2012
I've make the ODBC connections (called MOFIBO2, MOFIBO3, MOFIBO4) and i've a succesfull connection to then SQL server.
The Oracle Database is:
Oracle Database 11g Release 11.2.0.3.0 - 64bit Production
I've made 3 versions of the initdg4odbc.ora and they all look the same:
# This is a sample agent init file that contains the HS parameters that are
# needed for the Database Gateway for ODBC
# HS init parameters
HS_FDS_CONNECT_INFO = MOFIBOx (MOFIBO2, MOFIBO3 and MOFIBO4)
HS_FDS_TRACE_LEVEL = off
# Environment variables required for the non-Oracle system
#set <envvar>=<value>
My lisener.ora look like this:
# listener.ora Network Configuration File: C:\app\Administrator\product\11.2.0\dbhome_1\NETWORK\ADMIN\listener.ora
# Generated by Oracle configuration tools.
LISTENER =
(DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = resp-ora01)(PORT = 1521))
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
   (SID_NAME = PLSExtProc)
   (ORACLE_HOME = C:\app\Administrator\product\11.2.0\dbhome_1)
   (PROGRAM = extproc)
(SID_DESC =
   (ORACLE_HOME = C:\app\Administrator\product\11.2.0\dbhome_1)
   (SID_NAME = RESPTEST)
(SID_DESC =
   (SID_NAME=MOFIBO2)
   (ORACLE_HOME = C:\app\Administrator\product\11.2.0\dbhome_1)
   (PROGRAM = dg4odbc)
(SID_DESC =
   (SID_NAME=MOFIBO3)
   (ORACLE_HOME = C:\app\Administrator\product\11.2.0\dbhome_1)
   (PROGRAM = dg4odbc)
(SID_DESC =
   (SID_NAME=MOFIBO4)
   (ORACLE_HOME = C:\app\Administrator\product\11.2.0\dbhome_1)
   (PROGRAM = dg4odbc)
ADR_BASE_LISTENER = C:\app\Administrator\product\11.2.0\dbhome_1\log
And my mofibo part of then tnsnames.ora look like this (I've made three variants because different "manuals" uses different methods ):
MOFIBO2=
(DESCRIPTION=
   (ADDRESS=(PROTOCOL=TCP)(HOST=resp-ora02)(PORT=1521))
   (CONNECT_DATA=
    (SID=MOFIBO2)
   (HS=OK)
MOFIBO3=
(DESCRIPTION=
   (ADDRESS=(PROTOCOL=TCP)(HOST=resp-ora02)(PORT=1521))
   (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SID_NAME = MOFIBO3)
   (HS=OK)
MOFIBO4=
(DESCRIPTION=
   (ADDRESS=(PROTOCOL=TCP)(HOST=resp-ora02)(PORT=1521))
   (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = MOFIBO4)
   (HS=OK)
When tnsping to the three versions i get this:
C:\Users\Administrator>tnsping mofibo2
TNS Ping Utility for 64-bit Windows: Version 11.2.0.3.0 - Production on 24-APR-2014 12:48:17
Copyright (c) 1997, 2011, Oracle. All rights reserved.
Used parameter files:
C:\app\Administrator\product\11.2.0\dbhome_1\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION= (ADDRESS=(PROTOCOL=TCP)(HOST=resp-ora02)(PORT=1521)) (CONNECT_DATA= (SID=MOFIBO2)) (
HS=OK))
OK (10 msec)
C:\Users\Administrator>tnsping mofibo3
TNS Ping Utility for 64-bit Windows: Version 11.2.0.3.0 - Production on 24-APR-2014 12:48:23
Copyright (c) 1997, 2011, Oracle. All rights reserved.
Used parameter files:
C:\app\Administrator\product\11.2.0\dbhome_1\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION= (ADDRESS=(PROTOCOL=TCP)(HOST=resp-ora02)(PORT=1521)) (CONNECT_DATA = (SERVER = DEDIC
ATED) (SID_NAME = MOFIBO3)) (HS=OK))
OK (10 msec)
C:\Users\Administrator>tnsping mofibo4
TNS Ping Utility for 64-bit Windows: Version 11.2.0.3.0 - Production on 24-APR-2014 12:48:27
Copyright (c) 1997, 2011, Oracle. All rights reserved.
Used parameter files:
C:\app\Administrator\product\11.2.0\dbhome_1\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION= (ADDRESS=(PROTOCOL=TCP)(HOST=resp-ora02)(PORT=1521)) (CONNECT_DATA = (SERVER = DEDIC
ATED) (SERVICE_NAME = MOFIBO4)) (HS=OK))
OK (0 msec)
I created three database link with then following (username and password was in wright case):
create database link MOFIBODB2 connect to "<username>" identified by "<password>" using 'MOFIBO2';
create database link MOFIBODB3 connect to "<username>" identified by "<password>" using 'MOFIBO3';
create database link MOFIBODB4 connect to "<username>" identified by "<password>" using 'MOFIBO4';
when i was trying to select from a table (select * from customers@<DATABASELINKHERE>) i get the errors (substitute MOFIBO2 with MOFIBO3/4 and same error occours):
SQL> select * from customers@MOFIBODB2;
select * from customers@MOFIBODB2
ERROR at line 1:
ORA-28545: error diagnosed by Net8 when connecting to an agent
Unable to retrieve text of NETWORK/NCR message 65535
ORA-02063: preceding 2 lines from MOFIBODB2
What is my mistake?

Hi,
In the listener.ora you have the host as -
(HOST = resp-ora01)
but in the tnsnames.ora entries you have -
(HOST=resp-ora02)
The tnsnames.ora host must be the same as the listener host.
Unless you have a listener running on resp-ora02 it isn't clear why the tnsping returns a result.
Change the host in the tnsnames.ora and let us know what happens.
Regards,
Mike

Error : ORA-28545: error diagnosed by Net8 when connecting to an agent

I try to connect my Oracle 11.2 database to SQL server 2012. I installed Oracle Gateway on a window 2012 R2 and followed Oracle Gateway configure instruction.
Here is the initdg4msql.ora
# HS init parameters
HS_FDS_CONNECT_INFO=ctmcsql2012.dot.state.co.us:1433/CTMCSQLSVR12/external
HS_FDS_TRACE_LEVEL=OFF
HS_FDS_TRANSACTION_MODEL=READ_ONLY
HS_DB_NAME=external
HS_DB_DOMAIN=ITS.DOT.STATE.CO.US
LISTENER.ORA
SID_LIST_LISTENER =
(SID_LIST =
   (SID_DESC =
(SID_NAME=PLSExtProc)
(ORACLE_HOME=D:\product\11.2.0\tg_1)
(PROGRAM=extproc)
   (SID_DESC =
(SID_NAME=dg4msql)
(ORACLE_HOME=D:\product\11.2.0\tg_1)
(PROGRAM=dg4msql)
LISTENER =
(DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = CTMCSQL2012.dot.state.co.us)(PORT = 1521))
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
ADR_BASE_LISTENER = D:\product\11.2.0\tg_1
TNSNAMES.ORA
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
    (CONNECT_DATA =
      (SID = PLSExtProc)
      (PRESENTATION = RO)
dg4msql.its.dot.state.co.us =
   (DESCRIPTION=
     (ADDRESS=(PROTOCOL=tcp)(HOST=ctmcsql2012.dot.state.co.us)(PORT=1521))
    (CONNECT_DATA=
      (SID=dg4msql))
    (HS=OK)
lsnrctl status output:
PS D:\product\11.2.0\tg_1\bin> lsnrctl status LISTENER
LSNRCTL for 64-bit Windows: Version 11.2.0.1.0 - Production on 23-APR-2015 14:26:54
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=CTMCSQL2012.dot.state.co.us)(PORT=1521)))
STATUS of the LISTENER
Alias                     LISTENER
Version                   TNSLSNR for 64-bit Windows: Version 11.2.0.1.0 - Production
Start Date                21-APR-2015 16:00:11
Uptime                    1 days 22 hr. 26 min. 42 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   D:\product\11.2.0\tg_1\network\admin\listener.ora
Listener Log File         d:\product\11.2.0\tg_1\diag\tnslsnr\CTMCSQL2012\listener\alert\log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=CTMCSQL2012.dot.state.co.us)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1521ipc)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "dg4msql" has 1 instance(s).
Instance "dg4msql", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
I copied TNS entry to the database TNSNAMES.ora and created a DB link and get error:
CREATE DATABASE LINK "EXTERNAL.ITS.DOT.STATE.CO.US@CODOT"
CONNECT TO "CoDOT"
IDENTIFIED BY <PWD>
USING 'dg4msql.its.dot.state.co.us';
Link : "EXTERNAL.ITS.DOT.STATE.CO.US@CODOT"
Error : ORA-28545: error diagnosed by Net8 when connecting to an agent
Unable to retrieve text of NETWORK/NCR message 65535
ORA-02063: preceding 2 lines from EXTERNAL@CODOT

Check if this helps you - https://community.oracle.com/thread/466786
Pradeep

Cannot connect: ORA-12505 error (listener does not know SID..)

I have an Oracle 10g installation insde a VM with private IP (192.168.109.128) and I'm trying to access it from the host operating system with aqua data studio, but get ORA-12505 error (listener does not currently know of SID...). The identical error occurs if I try to cennect from within the VM itself.
"tnsping dbdemo" prints:
==================
Used parameter files:
C:\oracle\product\10.2.0\db_1\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = VMDSINW2K3S)(PORT = 1521)) (CONNECT_DATA =
(SERVER = DEDICATED) (SERVICE_NAME = dbdemo.datadsin)))
OK (10 msec)
and lsnrctl status:
=============
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production
Start Date 12-MAR-2007 15:22:55
Uptime 0 days 0 hr. 5 min. 14 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File C:\oracle\product\10.2.0\db_1\network\admin\listener.ora
Listener Log File C:\oracle\product\10.2.0\db_1\network\log\listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=VMDSINW2K3S)(PORT=1521)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
and the listener.log:
===============
12-MAR-2007 15:29:21 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=__jdbc__)(USER=))(SERVICE_NAME=dbdemo.datadsin)) * (ADDRESS=(PROTOCOL=tcp)(HOST=10.10.10.10)(PORT=1325)) * establish * dbdemo.datadsin * 12514
TNS-12514: TNS:listener does not currently know of service requested in connect descriptor
12-MAR-2007 15:29:21 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=__jdbc__)(USER=))(SERVICE_NAME=dbdemo.datadsin)) * (ADDRESS=(PROTOCOL=tcp)(HOST=10.10.10.10)(PORT=1327)) * establish * dbdemo.datadsin * 12514
TNS-12514: TNS:listener does not currently know of service requested in connect descriptor
12-MAR-2007 15:29:21 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=__jdbc__)(USER=))(SERVICE_NAME=dbdemo.datadsin)) * (ADDRESS=(PROTOCOL=tcp)(HOST=10.10.10.10)(PORT=1328)) * establish * dbdemo.datadsin * 12514
TNS-12514: TNS:listener does not currently know of service requested in connect descriptor
12-MAR-2007 15:29:45 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=__jdbc__)(USER=))(SERVICE_NAME=dbdemo.datadsin)) * (ADDRESS=(PROTOCOL=tcp)(HOST=10.10.10.10)(PORT=1331)) * establish * dbdemo.datadsin * 12514
TNS-12514: TNS:listener does not currently know of service requested in connect descriptor
12-MAR-2007 15:29:51 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=__jdbc__)(USER=))(SERVICE_NAME=dbdemo.datadsin)) * (ADDRESS=(PROTOCOL=tcp)(HOST=10.10.10.10)(PORT=1335)) * establish * dbdemo.datadsin * 12514
TNS-12514: TNS:listener does not currently know of service requested in connect descriptor
12-MAR-2007 15:29:51 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=__jdbc__)(USER=))(SERVICE_NAME=dbdemo.datadsin)) * (ADDRESS=(PROTOCOL=tcp)(HOST=10.10.10.10)(PORT=1336)) * establish * dbdemo.datadsin * 12514
TNS-12514: TNS:listener does not currently know of service requested in connect descriptor
12-MAR-2007 15:29:51 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=__jdbc__)(USER=))(SERVICE_NAME=dbdemo.datadsin)) * (ADDRESS=(PROTOCOL=tcp)(HOST=10.10.10.10)(PORT=1338)) * establish * dbdemo.datadsin * 12514
TNS-12514: TNS:listener does not currently know of service requested in connect descriptor
12-MAR-2007 15:29:51 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=__jdbc__)(USER=))(SERVICE_NAME=dbdemo.datadsin)) * (ADDRESS=(PROTOCOL=tcp)(HOST=10.10.10.10)(PORT=1339)) * establish * dbdemo.datadsin * 12514
TNS-12514: TNS:listener does not currently know of service requested in connect descriptor
my sqlnet.ora is:
============
# sqlnet.ora Network Configuration File: C:\oracle\product\10.2.0\db_1\network\admin\sqlnet.ora
# Generated by Oracle configuration tools.
# This file is actually generated by netca. But if customers choose to
# install "Software Only", this file wont exist and without the native
# authentication, they will not be able to connect to the database on NT.
SQLNET.AUTHENTICATION_SERVICES= (NTS)
NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)

12514, 00000, "TNS:listener does not currently know of service requested in connect descriptor"
// *Cause: The listener received a request to establish a connection to a
// database or other service. The connect descriptor received by the listener
// specified a service name for a service (usually a database service)
// that either has not yet dynamically registered with the listener or has
// not been statically configured for the listener. This may be a temporary
// condition such as after the listener has started, but before the database
// instance has registered with the listener.
// *Action:
// - Wait a moment and try to connect a second time.
// - Check which services are currently known by the listener by executing:
//    lsnrctl services <listener name>
// - Check that the SERVICE_NAME parameter in the connect descriptor of the
//    net service name used specifies a service known by the listener.
// - If an easy connect naming connect identifier was used, check that
//    the service name specified is a service known by the listener.
// - Check for an event in the listener.log file.

Failed to connect to database instance: ORA-02002: error writing to audit_t

I have a 4 node cluster and getting this alert very ferquently...
checking audit_trail gives this error
SQL> select count(*) from dba_audit_trail
2 ;
select count(*) from dba_audit_trail
ERROR at line 1:
ORA-01115: IO error reading block from file 1 (block # 108673)
ORA-01110: data file 1: '+DG_PROD/ngprod/datafile/system.258.665846277'
ORA-15081: failed to submit an I/O operation to a disk
Documentation on error says.........
ORA-02002: error while writing to audit trail
Cause: The auditing facility is unable to write to the AUDIT_TRAIL table. If this error occurs, SQL statements that are currently being audited may also fail. This error will occur if the SYSTEM tablespace runs out of disk space.
Action: Add space to the SYSTEM tablespace or delete rows from the AUDIT_TRAIL table. If these operations fail or do not eliminate the problem, shut down and restart Oracle with auditing disabled. This is done by setting the initialization parameter AUDIT_TRAIL to FALSE.
How should I check the system tablespaces ...I'm getting the error....and moreover they are autoextendible....Any idea about the issue

You can check the space available in any tablespace with a query from dba_free_space;
Give serious consideration to moving AUD$ out of the system tablespace. Theoretically you can not do this prior to database 11.1.0.7 (where you can use the built-in package DBMS_AUDIT_MGMT.MOVE_DBAUDIT_TABLES). But if you open an SR at metalink they will instruct you to do it manually which keeps everything legal and supported.
http://www.morganslibrary.org/reference/dbms_audit_mgmt.html
Also look into using resumable transactions (DBMS_RESUMABLE) to keep these things from happening in the future.
http://www.morganslibrary.org/reference/dbms_resumable.html

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