Oracle logs -- give a hand to a MS SQL DBA ;-)

Hello,
I'm a MS SQL DBA, but now have to learn Oracle. There is the only log (ErrorLog) in MS SQL, it stores security events (such as logon/logout), configurations changes and error messages.
I'm very confused while I searched for the same log(s) in Oracle. As far as I understand there are several logs in Oracle (security, alert, backup, performance...), and they're stored as a tables. Is it right?
What kind of logs Oracle DB server manages? Could you recommend a documents (url desired) for reading?
Thank you for your time,
Vladimir.

Oracle has an alert log (alert_<<SID>>.log) in the directory specified by the initialization parameter BACKGROUND_DUMP_DEST. That tracks database-level errors, as well as database startup and shutdown and the non-default parameters used at startup. That is probably the log you're looking for.
If one of the background processes fails, a trace file is written to BACKGROUND_DUMP_DEST (<<SID>>_<<process name>>_<<number>>.trc). If a user process fails, or if you want to generate some detailed tracing information, you can have different sorts of trace files written to USER_DUMP_DEST.
You can also enable auditing and specify events that you want to track. The command
audit connectfor example, will log every time a user logs in or out. The audit trail can be set either generate an audit record to a database table or to a file. The table is generally easier to work with, but the log file may offer more protection against a DBA altering the audit trail.
Justin
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

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Hi Experts,
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When Oracle problem was solved the documents were not found in SM13 to recovered.
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On the other hand If a have finantial documents in QAS how can I put it on PRD?
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Hi,
Schedule your backups according to the full backup time.
Do a test of full backup and fine the time that it takes to complete the full backup. You can include "plus archivelog" if you want your archive logs to be backed up along with the full backup. This is most preferred as this makes restoration easy too.
If your full backup takes, say, 4 hrs to complete and if you schedule your full backup at 00 00 hrs on your scheduler, then schedule the archive backups after 04 00 hrs. This will solve your problems with missing archive backups.
>> "But from RMAN specialist I heard that this may cause problems with full backup. During full backup also archive logs are backed up (at the start and end) so there might be a problem with accessing the file that is used by another process. And this may cause problem with full backup - which we want to avoid especially."
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Oracle Certification and the Hands-On Course Requirement (Part 1)

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Neha,
One item that may be helpful for you is the Hands On Course Form Tutorial http://www.oracle.com/global/us/education/certification/pdfs/hands.pdf.
->How many Questions they ask in Hands on Course ?
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Oracle Certification and the Hands-On Course Requirement" (Part 2)

Part 2 to Tuesday's post now online: "Oracle Certification and the Hands-On Course Requirement" (Part 2)" http://bit.ly/L9ID8

Neha,
One item that may be helpful for you is the Hands On Course Form Tutorial http://www.oracle.com/global/us/education/certification/pdfs/hands.pdf.
->How many Questions they ask in Hands on Course ?
Different forms have a different number of questions depending on the path and number of courses that are approved to count toward the certification
->"when did you take it" , should I answer in duration or the Start date of batch or end date of batch ?
You should provide the course start date
->What is "Course Facility Name"?
The name of the facility where you took your course
->will i be asked to provide the order number which i get from oracle while registering the exam at oracle ?
You will need your course enrollment number. This should be in the documentation that you received when you registered for the course
->is it correct Course Title - Oracle 9i DBA Fundamental II ?
You should find your course title on your course completion certificate. There will be a list of courses to choose from on the "test"/form.
->I dont receive any certificate from SQL STAR , But will be getting after 3-4 weeks, in the mean time i wish to fill HOC ?Can i Do it ?
Yes you can do it, you'll just need to be sure that you have all the information that is required >Course title, Course enrollment number, training location.
->Please give more questions which can be asked in it , whether it is known or not ?
You will also need your Prometric ID.
Regards,
Brandye Barrington
Certification Forum Moderator
Certification Program Manager

ORACLE LOG ERRORS - Bug in oracle??

Hi,
we are using oracle log errors to capture oversized err records for varchar2 type fields. Sql is something like:
INSERT INTO abc (col1,col2) VALUES ('asdsass','weqwewqee') LOG ERRORS INTO abc_err('1') REJECT LIMIT UNLIMITED;
But, data captured in abc table is trimmed data. Right spaces present in source are being trimmed by oracle while capturing this error table. I have the following queries:
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-Is it a bug in oracle log errors functionallity??
-Is there any workaround to use oracle log errors functionality to catch untrimmed data?
thanks,
Edited by: user7036480 on Dec 11, 2008 4:22 PM

user7036480 wrote:
-Has anyone else experienced this type of behavior? Yes, described in that issue while "log errors into g_logtest_err(1) reject limit 1" (is it you?)
-Is it a bug in oracle log errors functionallity?? Raise a SR to know.
-Is there any workaround to use oracle log errors functionality to catch untrimmed data?No.
Nicolas.

Does oracle log general errors

Dear experts,
I am using Oracle 11.2.0.3. I am researching on random ORA-00900:     invalid SQL statement error that we are seeing in production. Does oracle log such errors in alert.log or any tables? If not can we configure to log such errors?
Thanks.

Dont understand.... you are seeing ORA-00900 in production but don't know where to search this error? where do you see it?It is being logged from application in event log which I do not have access to. I wanted to check if oracle also logs such error some where.
SQL Banner : SQL*Plus: Release 11.2.0.1.0 Production on Wed Nov 28 12:12:25 2012
SQL :
SELECT
overload,
DECODE (
position,
0,
'RETURN_VALUE',
NVL (argument_name, CHR (0))
) AS name,
DECODE (
in_out,
'IN', 1,
'IN/OUT', 3,
'OUT', DECODE (argument_name, NULL, 6, 2),
1
) AS direction,
DECODE (
data_type,
'BFILE', 101,
'BLOB', 102,
'BYTE', 103,
'CHAR', 104,
'CLOB', 105,
'DATE', 106,
'DECIMAL', 107,
'DOUBLE', 108,
'INT16', 111,
'INT32', 112,
'INT64', 113,
'INTERVAL DAY TO SECOND', 114,
'INTERVAL YEAR TO MONTH', 115,
'LONG', 109,
'LONG RAW', 110,
'NCHAR', 117,
'NCLOB', 116,
'NVARCHAR2', 119,
'RAW', 120,
'REF CURSOR', 121,
'SINGLE', 122,
'TIMESTAMP', 123,
'TIMESTAMP WITH LOCAL TIME ZONE', 124,
'TIMESTAMP WITH TIME ZONE', 125,
'VARCHAR2', 126,
'XMLTYPE', 127,
'NUMBER', 107,
126
) AS oracleType,
DECODE (
data_type,
'BLOB', 0,
'CHAR', 0,
'CLOB', 0,
'LONG RAW', 0,
'NCHAR', 0,
'NCLOB', 0,
'NVARCHAR2', 0,
'RAW', 0,
'VARCHAR2', 2048,
0
) AS length,
NVL (data_precision, 255) AS precision,
NVL (data_scale, 255) AS scale
FROM
all_arguments
WHERE
data_level = 0
AND data_type IS NOT NULL
AND owner = :schemaName
AND package_name = :packageName
AND object_name = :methodName
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overload, position
******************** EXCEPTION PROPERTIES ********************
Errors: Oracle.DataAccess.Client.OracleErrorCollection
Source: Oracle Data Provider for .NET
Number: 900
ErrorCode: -2147467259
Data: System.Collections.ListDictionaryInternal
TargetSite: Void HandleErrorHelper(Int32, Oracle.DataAccess.Client.OracleConnection, IntPtr, Oracle.DataAccess.Client.OpoSqlValCtx*, System.Object, System.String, Boolean)
Edited by: spur230 on Nov 28, 2012 12:13 PM

Regarding SAP & Oracle logs deletion

Hi,
I have a concern on SAP & Oracle logs. I want to know what are all the logs mentioned below can be deleted and what are all the logs should be kept for the recovery of DB, if the system got crashed. Also how many days logs should be kept for the future purpose. In our landscape, we are running online backup job daily from the T-code DB13.
sapbackup
oraarch
mirrlogA
mirrlogB
origlogA
origlogB
saparch
sapcheck
sapreorg
saptrace\usertrace
saptrace\background
Kindly let me know the answer ASAP.
Thanks & Regards,
Mogileeswar Reddy

That information is widely available.
No research done
No interview questions
Please read the "Rules of Engagement"
Regards
Juan

Oracle log deletion

Hi,
I am wanting to save some space with the oracle logs which are created. I have zipped up the files and want to delete the logs until I actually have to use them. Does Oracle access these logs during normal operation or am I safe to delete them and extract them from the zip file if needed in the future?

we dont do online operations we have created log
files after backup and it has occupied large space in
memory, we have created some log files is it save to
delete these log files.I am kinda confused by the statment.
What log files you created? with what command?
occupied large space in memoryI suppose you mean diskspace not memory correct?

How to use oracle log ?

Hello experts,
what is oracle logs ? how these are helpful to identify the error and error messages ?
thanks in advance
yash

yash_08031983 wrote:
i take an example..
i have a function or procedure, i executed it in some pl/sql block. and its generating some error.
if i want to check, where is problem or which error generated, can i check it from logs.
i want to use the oracle logs in daily practice while writing procedure and function or pl/sql pr sql statements.
That error which is generated by some user-defined program is not an error that would be considered to go into the database logs(alert.log etc) but it would be passed on to the calling environment and based on that environment, that error details would be displayed. Have you not seen such error details shown while doing the coding of such programs? If you need to go more than that you would need to include some additional bits of code like dbms_utility and may have to call it's procedure format_error_backtrace .
Just my 2 cents.
Aman....

How to - write oracle logs to syslog

Is there a method for writing some/all of the logs produced by oracle in syslog format? In the
SANS oracle security class it was suggested to write oracle logs using syslog on unix systems.
I am running 10g on RedHat.
Has anyone done this before? Any pointers to reference material? My google search for
variations of - syslog oracle unix logs was not helpful.
thanks
THeresa

Is there a method for writing some/all of the logs produced by oracle in syslog format?What type of logs do you mean?
Maybe following link will help you (Documentation - New Features):
http://download-uk.oracle.com/docs/cd/B19306_01/network.102/b14266/whatsnew.htm#sthref34
This is example if you want put all messages from alert log to syslog.
You could use "logger" command for this purpose.
For example create startup script (in /etc/init.d/ directory) which will execute (as root) following command:
tail -f /path/to/oracle/bdump/alert_<SID>.log | logger &Now all actions will be logged in alert log and also in system logs.
This example has at least one disadvantage:
If you remove alert log tail will loose the pointer for file - no new messages in system logs.
For more info execute "man logger" from shell.

Oracle Log files Path

Could anybody update where can we find oracle log files which stores log-in details (specially erros) when log thro' SQLPlus or OEM
and oracle service issue logs.
Thax
Shabar

Hi,
If you are encountring any network related errors you can find the errors in sqlnet.log (<<ORACLE_HOME>>\NETWORK\LOG).
But for program related errors, you have spool the output to a text file manually.
Eg:
SQL>spool logfile.txt
SQL> select * fromtab;
SQL> spool off
In this example, the output will be saved in logfile.txt.
Regards,
Satheesh

Connect Oracle 11g (64-bit windows server) to Microsoft SQL Server 2000

Hi all,
I am trying to connect:
Oracle 11g (64-bit windows server) to Microsoft SQL Server 2000 (32-bit) on a different machine.
1) I have create an ODBC connection (called:GALAXY) which connects.
2) created a init.ora called it initgalaxy.ora in $oracle_home\hs\admin
HS_FDS_CONNECT_INFO = GALAXY
HS_FDS_TRACE_LEVEL = on
3) modified the listener.ora file as below
# listener.ora Network Configuration File: E:\Ora11g\product\11.1.0\db_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = BIU01)(PORT = 1521))
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = extproc0))
SID_LIST_LISTENER=
(SID_LIST=
(SID_DESC =
(GLOBAL_DBNAME = HEX.BIU01.kingsch.nhs.uk)
(ORACLE_HOME = E:\Ora11g\product\11.1.0\db_1)
(SID_NAME = HEX)
(SID_DESC=
(SID_NAME = galaxy)
(ORACLE_HOME = E:\Ora11g\product\11.1.0\db_1)
(PROGRAM = dg4odbc)
(SID_DESC =
(PROGRAM = EXTPROC)
(SID_NAME = PLSExtProc)
(ORACLE_HOME = E:\Ora11g\product\11.1.0\db_1)
4) modified the tnsnames.ora file is as follows
GALAXY =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = BIU01.kingsch.nhs.uk)(PORT = 1521))
(CONNECT_DATA =
(SID = galaxy)
(HS = OK)
HEX =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = BIU01.kingsch.nhs.uk)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = HEX)
5) restarted the listener
6) created a public database connect
create PUBLIC DATABASE LINK "GALAXY" CONNECT TO "USER" IDENTIFIED by "PWD" USING 'galaxy';
This is the error message I can sell in $oracle_home\hs\admin\trace
Oracle Corporation --- MONDAY APR 27 2009 11:54:18.370
Heterogeneous Agent Release
11.1.0.6.0
Oracle Corporation --- MONDAY APR 27 2009 11:54:18.370
Version 11.1.0.6.0
HOSGIP for "HS_FDS_TRACE_LEVEL" returned "ON"
HOSGIP for "HS_OPEN_CURSORS" returned "50"
HOSGIP for "HS_FDS_FETCH_ROWS" returned "100"
HOSGIP for "HS_LONG_PIECE_TRANSFER_SIZE" returned "65536"
HOSGIP for "HS_NLS_NUMERIC_CHARACTER" returned ".,"
HOSGIP for "HS_FDS_RECOVERY_ACCOUNT" returned "RECOVER"
HOSGIP for "HS_FDS_TRANSACTION_LOG" returned ""HS_TRANSACTION_LOG""
HOSGIP for "HS_FDS_TIMESTAMP_AS_DATE" returned "TRUE"
HOSGIP for "HS_FDS_CHARACTER_SEMANTICS" returned "FALSE"
HOSGIP for "HS_FDS_MAP_NCHAR" returned "TRUE"
HOSGIP for "HS_FDS_RESULT_SET_SUPPORT" returned "FALSE"
HOSGIP for "HS_FDS_PROC_IS_FUNC" returned "FALSE"
HOSGIP for "HS_FDS_REPORT_REAL_AS_DOUBLE" returned "FALSE"
using galaxy_live as default value for "HS_FDS_DEFAULT_OWNER"
HOSGIP for "HS_SQL_HANDLE_STMT_REUSE" returned "FALSE"
##>Connect Parameters (len=42)<##
## DSN=GALAXY;
#! UID=galaxy_live;
#! PWD=*
hgocont, line 1890: calling SqlDriverConnect got sqlstate IM002
when I try to test the database link, I get this error:
ORA-28500: connection from ORACLE to a non-Oracle system returned this message:
[Microsoft][ODBC Drive Manager] Data source name not found and no default driver specified
ORA-02063: preceding 2 lines from GALAXY
28500.00000- "connection from ORACLE to ad non-Oracle system returned this message:"
*Cause: The cause is explained in the forwarded message.
*Action: See the non-Oracle system's documentation of the forwarded message.
vendor code 28500
Edited by: user7336435 on 27-Apr-2009 05:56

11.2 is beta at the moment. There is no official release date so far.
As DG4ODBC is independant from the Oracle database (or the target database) you can use a 3 machine model:
On the first machine you have your Oracle database, on a second machine running 32bit Windows you can install DG4ODBC and on the 3rd machine you can run your foreign database.
If the SQL Server 2k is installed on a 32bit Windows machine, then you can also install DG4ODBC on this machine.
In general the connection from an Oracle database to the DG4ODBC machine is done using SDQL*Net. The listener responsible for DG4ODBC will then load the DG4ODBC executable which will connect to the SQL Server using SQL Server ODBC driver.

Differences between being an Oracle and SQL DBA?

Sorry to post this here, but I need so insight and don't know any Oracle DBA's. As posted here before, Ive been a MSSQL DBA for about 6 years and want to broaden my skill set. One of my ideas is to learn Oracle. For the record, I do realize that my teaching myself wont open up hundreds or Oracle DBA jobs, but Im hoping to land a "mostly SQL with a little Oracle" gig somewhere. Ive successfully installed Oracle on Linux, and now need to make a decision on if to proceed or not. Any insights from people that have worked with both platforms would be especially helpful, but all thoughts are definately welcomed. So now my questions:
1. Why are Oracle DBA's paid more than SQL DBA's? It must be something skill specific? What is it?
2. Will this trend likely continue as newer versions of Oracle are released that are easier to manage?
3. With that extra cash, is there typically more hours involved? I dont mind working a bit extra if needed, but I do have little ones that I'd like to watch grow up.
4. Are there typically differences in the job responsibilities between Oracle and SQL DBA's? The changing trend these days is to include DTS/ Analysis Services/ Reporting Services all under the DBA umbrella. Do Oracle DBA's typically have the same type of stuff?
5. If I do continue down this path, it would probably be far easier for me to learn on Windows than *nix. Is this a valid thing to do, or should I not bother? I've been told that it's still worth while, but have real reservations about needing to tell an interviewer "I've only used it on Windows".
I realize this is all subject to personal experiences and feelings, but don't know how else to figure this stuff out without asking.
TIA, ChrisR

By SQL DBA, I assume you mean SQL Server DBA. SQL is 'Structure Query Language' and is not a specific product, no matter how much the Microsoft community might wish to usurp the term. <g>
There are mauy reasons for this, including the Oracle vs Microsoft mindset that has been nurtured over the years. For many managers, 'Oracle is solid, reliable and expensive' whereas 'Microsoft SQL Server is cheap, not necessarily as reliable, but good enough'.
Whether true or not is irrelevant, these are direct quotes from some of my customers.
My remaining answers are based on my personal experience, and may only be valid in my area. (Yes, things are VERY regional.)
>
1. Why are Oracle DBA's paid more than SQL DBA's? It
must be something skill specific? What is it? Often, an Oracle DBA is a trained DBA. SQL Server DBAs seem to be decent developers who are [or have been stuck] doing DBA work.
I find that SQL Server DBAs who are truly capable of handling all of {backup, recovery, troubleshooting, security, development, disaster recovery, audit, locking, configuration, RAID and disk, upgrade, migration and porting (to name a few)} competently are generally paid comparable to Oracle DBAs.
However, I also find there are extremely few true SQL Server DBAs.
>
2. Will this trend likely continue as newer versions
of Oracle are released that are easier to manage?Yes.
Although Oracle administration is easier, DBAs are now expected to handle more instances, and adminstrator across more servers, and are expected to be competent in more of the feature capabilities.
There is NO reduction in the amount of work. The 'easier to manage' stuff simply means being more efficient.
>
3. With that extra cash, is there typically more
hours involved? I dont mind working a bit extra if
needed, but I do have little ones that I'd like to
watch grow up.
A blatant observation: Oracle tends to be used in more mission critical environments, and SQL Server in department support environments. Mission critical tends to be watched closer, and require 'fast aqnd competent' response. Pager duty seems to be more prevelant in Oracle positions - department server crashes can be handled by a reboot in the morning.
4. Are there typically differences in the job
responsibilities between Oracle and SQL DBA's? The
changing trend these days is to include DTS/ Analysis
Services/ Reporting Services all under the DBA
umbrella. Do Oracle DBA's typically have the same
type of stuff?Many SQL Server 'DBAs' I know personally are 'super developers' but not really DBAs.
Observation: DBAs are often very 'repeatable' detail oriented, whereas developers are 'get it done' oriented. Very different mentailties, both very important.
>
5. If I do continue down this path, it would probably
be far easier for me to learn on Windows than *nix.
Is this a valid thing to do, or should I not bother?
I've been told that it's still worth while, but have
real reservations about needing to tell an
interviewer "I've only used it on Windows". Oracle is quite operating system independant. Pick your poison.
SQL Server is quite operating system dependant. Some else picks your poison.
There is no shame in saying to an interviewer that you have a strong competence in Oracle but only experience in Windows. A good potential employer will often provide appropriate additional training to a suitable, honest, candidate.
>
I realize this is all subject to personal experiences
and feelings, but don't know how else to figure this
stuff out without asking.
I strongly encourage you to contact locals rather than ask in these forums. Check whether there is an Oracle User Group close to you, and meet and chat with the members. Ditto for SQL Server. (You can find out by contacting respective sales reps.)
The above is NOT a dismissal of SQL Server capabiltites or SQL Server DBAs. (Some close friends are extremely competent with SQL Server.) It is just a set of personal observations.

Do we need to format data and log files with 64k cluster size for sql server 2012?

Do we need to format data and log files with 64k cluster size for sql server 2012?
Does this best practice still applies to sql server 2012 & 2014?

Yes. The extent size of SQL Server data files, and the max log block size have not changed with the new versions, so the guidance should remain the same.
Microsoft SQL Server Storage Engine PM

When i try to log on to Oracle it gives an error TNS:no listener, WHY?

hi guys,
WHen i try to log on to the Oracle 8i server using the user: SYSTEM and password: manager, it gives an error
ERROR:
ORA-12541: TNS: no listener
why this occurs and how do i fix the problem? please give me step by step instructions TY :)
Message was edited by:
user502781

ORA-12541 ...
- The client is requesting connection to a service.
- The service is derived from the alias used in the connection. For example, @orcl ... orcl = alias.
- The alias is used to look up the host, listener port and service in the tnsnames.ora
The listener is on the same machine as the database. The listener must be up and listening on the port the client want to use.
If the listener is not up, there wil be an "ORA-12541: TNS: no listener" error;
If the listener is listening on the wrong port, there wil be an "ORA-12541: TNS: no listener" error;
If the client is asking for the wrong port, there wil be an "ORA-12541: TNS: no listener" error.
To start the listener in Windows, go to the Control Panel > Administration Tools > Services and ensure the Ora?????Listener is started.
To verify the listener is up, open a command box, and type 'lsnrctl status'
To see what the client is expecting, on the client machine open a command box, and type 'tnsping {alias}' where you replace {alias} with the alias to be used in the connection.

Oracle logs -- give a hand to a MS SQL DBA ;-)

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