TimesTen and 4TB database

Hi,
I am investigating this product for use with a 4TB client/server OLTP oracle database. We plan to migrate to an n-tier architecture (Oracle iAS in the middle) and plan on keeping the oracle database. How will TimesTen help in this scenario? Will I have to store the entire 4TB in TT on the middle tier? How will updates on the backend be replicated to TT. In real time? How much memory will I require to store that much data in TT?
For now I am looking for some high-level feedback on how TT actually works in my scenario.
Thank you

In this kind of scenario, typically you will cache just selected tables, or subsets of tables, in TimesTen in order to improve response times for key parts of the application. Before you can decide on how or if TimesTen can help you need to determine which parts of the application you need to speed up and whether the current bottleneck(s) relate to database access and/or the network hops related to database access. Then you should evaluate what data would need to be cached in TimesTen to enable those parts of the application to run against TimesTen rather than Oracle. You also need to evaluate what is involved in moving the application, and its SQL, from Oracle to TimesTen. What API(s)? does the application use to communicate with Oracle? Is any PL/SQL involved? Any esoteric database types? You should also perform some basic validation to confirm that for your data and queries, TimesTen provides a useful speed up over Oracle.
Chris

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Explain plan for timesten and Oracle

we have a base table in our Oracle 10g database. We created a DSN for this in timesten 7.0 database and are able to connect. Now we have created 3 materialized views in timesten on top of the Oracle Base Table. How can we get the explain plan in timesten to find out when the table is being called by a custom java application, the materialized views are being used or not ? Please advice

Hi Can you help me in this regards,
i am getting the following error. Can you tell me how can i get rid of them?
Command> call ttcachestart();
15001: User lacks privilege ADMIN

Application connection to TimesTen In-Memory Database

Hi All,
We're in the planing of creating TimesTen In-Memory Database for our production databases.Now we're in testing phase,we made one TimesTen In-Memory Database for one test database.
Now we don't want to put all database in memory, we've some selected tables for some users,we only want these tables will by in memory, so we create cache group & add theese tables in that.
Now some of my database is in memory & some database is not in memory,so I want to know that how the application users will connect to database ??
Is they connect to TimesTen In-Memory Database or our main database ???
If they connect to TimesTen In-Memory Database how they will access the procedures of functions etc from main database ???
Or If they connect to main database how these TimesTen In-Memory Database tables will access by users ???
Is TimesTen In-Memory Database will help only when we put whole database in memory ???
Thinks & Regards,
Atul Mandale.

Hi Atul,
If you want to cache all your database then just create cache groups to encapsulate all your tables. That is the only way. However, I am far from sure this would be a good idea...
TimesTen is not a transparent, 'just plug it in' performance accelerator (such a thing does not exist and probably never will). It is intended to solve specific problems i.e. when some or all parts of an application need 'real time' access to some database data and the performance requirements (usually response time but sometimes throughput) are such that they either cannot be met at all, or cannot be met cost effectively, using Oracle DB or RAC alone. If one has that kind of situation then TimesTen may be able to help. It is unlikely to help a general application scenario just by plugging it in. Note that to successfully implement TimesTen it is almost always necessary to make both application and architectural changes. Why is this?
1. You are moving from a single DB to a multi-DB solution. Each item of data can be mastered (i.e. be updateable) in only one DB - Oracle or TimesTen. All parts of the system must understand this and enforce this or dat inconsistency may result.
2. All the data held in TimesTen must fit into physical memory. Data storage requirements often increase when moving a table from Oracle to TT. If you have a table that takes up 5 GB in Oracle it may well need 8 GB or more of memory in TimesTen. Unless your Oracle database is quite small you will need a machine with a very large amount of memory to cache the whole DB in TimesTen.
3. Queries and transactoons cannot span data in TT and Oracle. Any given query or transaction must execute entirely in TimesTen or Oracle.
4. Depending on which tables are cached and which are not, some application componenst may need to be aware of the location (TT or Oracle) of specific tables/data and go to the right place to get it. The TimesTen PassThrough feature can certainly help a lot with this but it does not necessarily address every possible issue.
5. Today, TimesTen only supports ODBC and JDBC APIs. If you have an application that uses OCI it must be recoded to use ODBC. The next major release of TimesTen does support OCI.
6. TimesTen does not support triggers or PL/SQL. The next major release supports PL/SQL and we have our own proprietary event notification API called XLA.
7. Although the SQL supported by TimesTen is a large subset of Oracle SQL there are still incompatibilities and some datatypes (e.g. CLOBS/BLOBS is on example) that TimesTen does not support.
While it may be possible to cache all your database it may not be a very practical, or beneficial, way to go. Can you share a bit of detal about the problem you are trying to solve with TimesTen so that maybe we can advise you of the best approach?
Chris

Oracle TimesTen In-Memory Database Risk Matrix

Hi,
From the following web-site I can see two vulnerabilities listed against TimesTen --- CVE-2010-0873 and CVE-2010-0910
http://www.oracle.com/technetwork/topics/security/cpujul2010-155308.html
================================================================
Oracle TimesTen In-Memory Database Risk Matrix
CVE#      Component      Protocol      Package and/or Privilege Required      Remote Exploit without Auth.?      CVSS VERSION 2.0 RISK (see Risk Matrix Definitions)      Last Affected Patch set (per Supported Release)      Notes
Base Score      Access Vector      Access Complexity      Authentication      Confidentiality      Integrity      Availability
CVE-2010-0873      Data Server      TCP      None      Yes      10.0      Network      Low      None      Complete      Complete      Complete      7.0.6.0      See Note 1
CVE-2010-0910      Data Server      TCP      None      Yes      5.0      Network      Low      None      None      None      Partial+      7.0.6.0, 11.2.1.4.1      See Note 1
===========================================================================
Please let me know if I need to take any action on my current TimesTen deployment.
Im using TimesTen Release 11.2.1.8.4 and 7.0.5.16.0 in our customer sites.
Request you to respond with your valuable comments.
Regards
Pratheej

Hi Pratheej,
These vulnerabilities were fixed in 11.2.1.6.1 and 7.0.6.2.0. As you are on 11.2.1.8.4 you are okay for 11.2.1 but the 7.0.5.16.0 release does contain the vulnerability. If you are concerned then you should upgrade those to 7.0.6.2.0 or later (check for the latest applicable 7.0 release in My Oracle Support).
Chris

Oracle TimesTen In-Memory Database VS Oracle In-Memory Database Cache

Hi,
What is difference in Oracle TimesTen In-Memory Database VS Oracle In-Memory Database Cache.
For 32 bit on windows OS i am not able to insert data's more than 500k rows with 150 columns (with combinations of CHAR,BINARY_DOUBLE,BINARY_FLOAT, TT_BIGINT,REAL,DECIMAL,NUMERIC etc).
[TimesTen][TimesTen 11.2.2.2.0 ODBC Driver][TimesTen]TT0802: Database permanent space exhausted -- file "blk.c", lineno 3450, procedure "sbBlkAlloc"
I have set Perm size as 700 mb,Temp size as 100mb
What is the max size we can given for PermSize,TempSize,LogBufMB for 32 bit on windows OS.
What is the max size we can given for PermSize,TempSize,LogBufMB for 64 bit on windows OS.
What is the Max configuration of TT for 32 bit what i can set for Perm size Temp size.
Thanks!

They are the same product but they are licensed differently and the license limits what functionality you can use.
TimesTen In-Memory Database is a product in its own right allows you to use TimesTen as a standalone database and also allows replication.
IMDB Cache is an Oracle DB Enterprise Edition option (i.e. it can only be licensed as an option to an Oracle DB EE license). This includes all the functionality of TImesTen In-Memory Database but adds in cache functionality (cache groups, cache grid etc.).
32-bit O/S are in general a poor platform to try and create an in-memory database of any significant size (32-bit O/S are very limited in memory addressing capability) and 32-bit Windows is the worst example. The hard coded limit for total datastore size on 32-bit O/S is 2 GB but in reality you probably can;'t achieve that. On Windows the largest you can get is 1.1 GB and most often less than that. If you need something more than about 0.5 Gb on Windows then you really need to use 64-bit Windows and 64-bit TimesTen. There are no hard coded upper limit to database size on 64-bit TimesTen; the limit is the amount of free physical memory (not virtual memory) in the machine. I have easily created a 12 GB database on a Win64 machine with 16 GB RAM. On 64-bit Unix machines we have live database of over 1 TB...
Chris

Exalytics OBIEE, TimesTen and Views

Hi all,
I'm currently working on a prototype with an Exalytics box. I have several schemas in the TimesTen database with caching groups using 11g in one Exadata as source. On TimesTen there's one extra schema that UNIONs ALL the information from all schemas into several Views. These Views are then used as OBIEE source.
The first problem I ran into is that after adding the Views into OBIEE RPD Physical Layer, I'm not able to right click on the View and go into Physical Diagram, the option is not highlighted. I've imported tables from other schemas in TimesTen and was successfully able to join them in the Physical Diagram, the option is available to click, for Views it isn't, which is strange - You can use Oracle 11g Views as OBIEE source and it works perfectly.
I've also tried to right click the Views in the RPD and View Data in the Physical Layer and OBIEE simply returns me a lot of errors, as can be seen below:
[NQODBC][SQL_STATE:HY000][nQSError: 10058] A general error as occurred.
[nQSError: 43113] Message returned from OBIS.
[nQSError: 43093] An error occurred while processing the EXECUTE PHYSICAL statement.
[nQSError: 16001] ODBC error state: 3700 code: 7025 message:
[TimesTen][TimesTen 11.2.2.5.0 ODBC Driver][TimesTen]TT7025: Illegal use of reserved keyword "FROM", character position: 9 -- file "ptSqlY.y", lineno 9243, procedure "reserverd_word_or_syntax_error".
[nQSError: 16014] SQL Statement preparation failed.
Using TimesTen trace monitor I was able to see what query originated this error, and it was the following one:
15:39:50.592 73 SQL      2L   11C   4393P Preparing: select from DIM_DATE_VW
15:39:50.592 74 SQL      4L   11C   4393P sbSqlCmdCompile1()(E): cmdType:100, cmdNum:1001123.
15:39:50.592 75 ERR      4L   11C   4393P TT7025: Illegal use of reserved keyword "FROM", character position:9 -- file "ptSqlY.y", lineno 9243, procedure "reserved_word_or_syntax_error"
Is this some sort of known bug or limitation between OBIEE, TimesTen and Views? Can anyone help?
I'm running TimesTen 11.2.2.5.0, Oracle 11.2.0.3.0 and OBIEE 11.1.1.7.1.
Best regards,
André

Who said you must buy Exalytics in order to use TT with OBIEE? If you already have it, just create an RPD connection pools and off you go. You won't be able to use all the nice bits 'n pieces a full Exalytics sports, but where OBIEE is concerned, it's just a source like any other.

TimesTen and Memcached

Hi,
Memcached (http://www.danga.com/memcached/) is a product being used by highly transactional websites to cache data structures in memory.
I beleive it is similar to what TimesTen does. I was trying to find comparison between TimesTen and Memcached at OTN, but no luck.
Appreciate if someone can provide the comparison for these alongwith pros and cons of both technologies.
Regards.

memcached is a distributed memory object cache, it is commonly used to cache SQL resultsets, targeted at repetitive queries found in read intensive database web applications. The user application is responsible for managing and populating the cache, memcached does not provide data synchronization with the Oracle database.
For example this is the logic the application developer needs to implement:
* Wherever you go to do a database query, first check the memcache. If the memcache returns an undefined object, then go to the database, get what you're looking for, and put it in the memcache
* To ensure the application does not see stale data, the application must update both the memcache and the database at the same time
memcached does not understand SQL. If a memcached node dies, all data are lost and it is up to the application to reload the data from the source.
TimesTen is a memory optimized SQL relational database, that can run standalone or as a cache in front of an Oracle database. Developers use standard JDBC, ODBC or SQL to access TimesTen. TimesTen provides real-time, updatable caching for Oracle database, the data synchronization between Oracle and TimesTen is automatically handled.
The TimesTen database is persistent and supports full ACID transactions with recovery. TimesTen also offers real-time transactional replication between TimesTen databases for high availability and load sharing.
Simon

Timesten and XLA

I'm investigating TimesTen and am looking to implement trigger like functionality using XLA. The specific trigger-like behavior I'm trying to implement using XLA is to automatically increment table id values using sequences.
After researching XLA, I don't see anything that would allow for "BEFORE INSERT" trigger functionality in order to provide a sequence's nextval as part of the same insert transaction.
Am I looking at this the wrong way? Can I create true trigger-like functionality using XLA?
Thanks

While XLA provides some 'trigger like' capabilities it has many differences to triggers and not a general purpose replacement for triggers. The most significant differences between triggers and XLA are:
1. XLA is an API which is called from coe executing outside the database whereas triggers are SQL constructs that reside, and execute, within the database.
2. Transactional changes only become visible to XLA after a transaction commits and so XLA cannot change the outcome of any transaction directly. Triggers execute within the context of the database transaction and in general are invoked before the transaction commits; they are therefore able to directly influence the outcome of the transaction.
I'm afraid that what you are looking to do is not possible in XLA. The closest that one could come would be to insert a record with a dummy value for the sequence derived field and then commit the insert. Your XLA based code could then detect the insert and, using SQL+ODBC calls on a separate ODBC connection, update the row with the value derived from the sequence. Note that if you are using this field as the primary key the nthis is still not possible since currently TimesTen does not allow primary key values to be updated...
Chris

TimesTen on the Database Host

I have reviewed the documentation and usually see Oracle 11g TimesTen (IMDB) Cache as part of the "Middle Tier".
Can Oracle 11g TimesTen (IMDB) Cache and the Oracle 11g Database be installed on the same host?
I have extra real memory on the host that runs the Oracle 11g Database and want to take advantage on IMDB Cache.
What is the reasoning behind running IMDB Cache on the "Middle Tier".

It is technically possible to install and run TimesTen on the same host as oracle Db but this is not a recommended configuration because:
1. Unless the Oracle/TT server has adequate hardware (CPU/Memory/Storage) and has been very carefully setup you are likely to get competition for memory, CPU and disk I/O resources between TimesTen and Oracle DB which will nnegatively impact the performance of both.
2. TimesTen delivers best performance when it is co-located with the application logic that is accessing it. When the application and TimesTen are on the same machine the appplication can use 'direct connection' mode which eliminates all IPC (even local IPC) from the app <-> TimesTen communication resulting in very efficient and low latncy communication between the app and TimesTen. When TimesTen is on the same server as oracle all interactions with TimesTen still incur a network roundtrip which is very expensive compared to typical SQL execution times in TimesTen.
So yes you can do it but in most cases it is a bad idea and won't deliver anything like the benefits you would getif you put TimesTen in the middle tier.
Chris

Create Temporary databases and Permanent databases

Hi,
How to configure or setup Temporary databases and Permanent databases ?
Need separate steps to install or setup Temporary / Permanent databases
Windows 2003 & 32 bit OS and 8 GB RAM
In web site http://docs.oracle.com/cd/E21901_01/doc/timesten.1122/e21633/comp.htm#CHDBEDHC
it is said as it is configured with DSN (Data Source Name)
but to how to setup Temporary databases and Permanent databases
Note:Oracle database has not been installed,only Oracle TimesTen has been installed.
Temporary databases are not stored to disk.
Permanent databases are stored to disk automatically through a procedure called checkpointing.
I need to keep the data in memory and need to pass the data to another server via replication or some other way.
Thanks!

Hi,
You dont need to install something. You need to configure your DSN only.
For creating Temporary database you should set up the Temporary DSN parameter (http://docs.oracle.com/cd/E21901_01/doc/timesten.1122/e21633/using.htm#BCGJAJDI).
If you want using Permanent database just uncheck Temporary DSN parameter.
Temporary databases are not stored to disk. Permanent databases are stored to disk automatically through a procedure called checkpointing. No. TimesTen databases (Permanent and Temporary) store data in memory. It is the main purpose. Permanent db saves a copy of data on disk only for recovery purpose. Temporary db doesnt do it.
regards,
Gennady

Running TimesTen and 9i together

The application I'm running has lots of reads from some tables and fewer writes on other tables.
I'm running a C++ code that works with Oracle 9i. I want to use the cache connect option to cache some of my tables but to do all the writing to the database (different tables).
I'm connecting using OTL to the oracle and what I couldn't figure out is if I need to do any code changes. If so, how can I support both the connection to the 9i and the TimesTen and what are the minimum changes that are required.
Help will be highly appreciated.
Thanks,
Amnon
Message was edited by:
user616300

If my understanding is correct, your requirement is that you want to cache the frequently used Oracle tables which are read only in TimesTen; but you also need to update tables which only exist in the Oracle database.
If so, there are a couple of ways to do this:
1. Your application can establish and maintain two separate database connections, one (ODBC/JDBC) to TimesTen for accessing the readonly tables and another (SQL*Net) to update the Oracle tables.
2. Use the Cache Connect PASSTHROUGH feature in TimesTen, which allows you to send SQL requests for non-cached data directly to the backend Oracle database.
Using the 2nd approach means that your application only need to provide connections to TimesTen, and TimesTen will spawn and manage the connection to the Oracle backend database. In terms of performance the 1st approach will always be the best, since the Oracle UPDATE statements do not need to go via TimesTen.
Regards
Simon

Log on to remote server and start database -error while installing CI in HA

Hello All,
We are installing ECC 6.0 with High Availability using HP-UX. We have completed installation in ASCS and Database Instance. Now when were trying to install in Central Instance, we encountered an error at Start Instance which informed us to Log on to remote server and start database. However the database is already running in DB node. Please find the log below.
TRACE 2011-06-10 16:31:45.825 [syuxctask.cpp:1382]
 CSyTaskImpl::start(bool)
A child process has been started. Pid = 25742
INFO 2011-06-10 16:31:45.835
 CJSlibModule::writeInfo_impl()
Output of /usr/sap/PE2/SYS/exe/run/startsap all DVEBMGS01 DBMCI001 is written to the logfile start_PE2_DVEBMGS01.log.
WARNING 2011-06-10 16:31:46.345
 CJSlibModule::writeWarning_impl()
Execution of the command "/usr/sap/PE2/SYS/exe/run/startsap all DVEBMGS01 DBMCI001" finished with return code 6. Output:
Database PE2 must be started on remote server
Log on to remote server and start database
WARNING[E] 2011-06-10 16:31:46.355
 CJSlibModule::writeError_impl()
CJS-20022 Could not start instance 'DVEBMGS01' of SAP system PE2.
TRACE 2011-06-10 16:31:46.355 [iaxxejsbas.hpp:408]
 handleException<ESAPinstJSError>()
Converting exception into JS Exception EJSException.
TRACE 2011-06-10 16:31:46.355
Function setMessageIdOfExceptionMessage: ind-rel.ind-os.ind-db.webas.startInstanceFailed
WARNING[E] 2011-06-10 16:31:46.355
 CJSlibModule::writeError_impl()
CJS-20022 Could not start instance 'DVEBMGS01' of SAP system PE2.
TRACE 2011-06-10 16:31:46.355 [iaxxejsbas.hpp:483]
 EJS_Base::dispatchFunctionCall()
JS Callback has thrown unknown exception. Rethrowing.
TRACE 2011-06-10 16:31:46.405 [syuxctask.cpp:1382]
 CSyTaskImpl::start(bool)
A child process has been started. Pid = 25793
ERROR 2011-06-10 16:31:46.525 [sixxcstepexecute.cpp:950]
FCO-00011 The step start with step key |NW_ABAP_CI|ind|ind|ind|ind|0|0|NW_CI_Instance|ind|ind|ind|ind|10|0|NW_CI_Instance_Start|ind|ind|ind|ind|2|0|start was executed with status ERROR .
TRACE 2011-06-10 16:31:46.555 [iaxxgenimp.cpp:752]
 CGuiEngineImp::showMessageBox
<html> <head> </head> <body> An error occurred while processing option SAP ERP 6.0 EHP4 Ready - Support Release 1 > SAP Application Server ABAP > Oracle > High-Availability System > Central Instance . You can now: <ul> <li> Choose Retry to repeat the current step. </li> <li> Choose View Log to get more information about the error. </li> <li> Stop the option and continue with it later. </li> </ul> Log files are written to /tmp/sapinst_instdir/ERPEhP4/AS-ABAP/ORA/HA/CI. </body></html>
TRACE 2011-06-10 16:31:46.555 [iaxxgenimp.cpp:1255]
 CGuiEngineImp::acceptAnswerForBlockingRequest
Waiting for an answer from GUI
Kindly let us know how to rectify the error and prroceed further with the instalaltion.
Thanks
Rishi

Dear Guys,
we didnt change the date and time but i m very sure it is same trans.log file.
for your kind information please note SID and Nodes details
Sid (PE2)
DB Node : DBMDB001
CI Node : DBMCI001
also i am attaching starting part of the file.
4 ETW000 R3trans version 6.14 (release 701 - 26.01.09 - 12:46:00).
4 ETW000 unicode enabled version
4 ETW000 ===============================================
4 ETW000
4 ETW000 date&time : 07.11.2010 - 03:44:06
4 ETW000 control file: <no ctrlfile>
4 ETW000 R3trans was called as follows: R3trans -d
4 ETW000 trace at level 2 opened for a given file pointer
4 ETW000 [dev trc ,00000] Sun Nov 7 03:44:06 2010 295 0.000295
4 ETW000 [dev trc ,00000] db_con_init called 22 0.000317
4 ETW000 [dev trc ,00000] create_con (con_name=R/3) 116 0.000433
4 ETW000 [dev trc ,00000] Loading DB library '/usr/sap/PC1/SYS/exe/run/dboraslib.so' ...
4 ETW000 64 0.000497
4 ETW000 [dev trc ,00000] load shared library (/usr/sap/PC1/SYS/exe/run/dboraslib.so), hdl 0
4 ETW000 32161 0.032658
4 ETW000 [dev trc ,00000] Library '/usr/sap/PC1/SYS/exe/run/dboraslib.so' loaded
4 ETW000 39 0.032697
4 ETW000 [dev trc ,00000] function DbSlExpFuns loaded from library
/usr/sap/PC1/SYS/exe/run/dboraslib.so
4 ETW000 111 0.032808
4 ETW000 [dev trc ,00000] Version of '/usr/sap/PC1/SYS/exe/run/dboraslib.so' is "700.08",
patchlevel (0.25)
4 ETW000 265 0.033073
4 ETW000 [dev trc ,00000] function dsql_db_init loaded from library
/usr/sap/PC1/SYS/exe/run/dboraslib.so
4 ETW000 41 0.033114
4 ETW000 [dev trc ,00000] function dbdd_exp_funs loaded from library
/usr/sap/PC1/SYS/exe/run/dboraslib.so
4 ETW000 82 0.033196
4 ETW000 [dev trc ,00000] New connection 0 created 52 0.033248
4 ETW000 [dev trc ,00000] 0: name = R/3, con_id = -000000001 state = DISCONNECTED, perm = YES,
reco = NO , timeout = 000, con_max = 255, con_opt = 255, occ = NO
4 ETW000 41 0.033289
4 ETW000 [dev trc ,00000] db_con_connect (con_name=R/3) 84 0.033373
4 ETW000 [dev trc ,00000] find_con_by_name found the following connection for reuse:
4 ETW000 31 0.033404
4 ETW000 [dev trc ,00000] 0: name = R/3, con_id = 000000000 state = DISCONNECTED, perm = YES,
reco = NO , timeout = 000, con_max = 255, con_opt = 255, occ = NO
4 ETW000 37 0.033441
4 ETW000 [dev trc ,00000] Oracle Client Version: '10.2.0.4.0' 601 0.034042
4 ETW000 [dev trc ,00000] -->oci_initialize (con_hdl=0) 25 0.034067
4 ETW000 [dev trc ,00000] Client character set UTF16 -> UTF8 35674 0.069741
4 ETW000 [dev trc ,00000] Client NLS setting (OCINlsGetInfo): 'AMERICAN_AMERICA.UTF8'
4 ETW000 57 0.069798
4 ETW000 [dev trc ,00000] Logon as OPS$-user to get SAPSR3's password 55 0.069853
4 ETW000 [dev trc ,00000] Connecting as /@PC1 on connection 0 (nls_hdl 0) ... (dbsl 700
151208)
4 ETW000 34 0.069887
4 ETW000 [dev trc ,00000] Nls CharacterSet NationalCharSet C
EnvHp ErrHp ErrHpBatch
4 ETW000 52 0.069939
4 ETW000 [dev trc ,00000] 0 UTF8 0
0x6000000001052910 0x600000000105a3c0 0x600000000106ab38
4 ETW000 58 0.069997
4 ETW000 [dev trc ,00000] Allocating service context handle for con_hdl=0 40 0.070037
4 ETW000 [dev trc ,00000] Allocating server context handle 27 0.070064
4 ETW000 [dev trc ,00000] Attaching to DB Server PC1
(con_hdl=0,svchp=0x600000000106aa68,srvhp=0x600000000106de78)
4 ETW000 63 0.070127
4 ETW000 [dev trc ,00000] Assigning server context 0x600000000106de78 to service context
0x600000000106aa68
4 ETW000 60612 0.130739
4 ETW000 [dev trc ,00000] Allocating user session handle 97 0.130836
4 ETW000 [dev trc ,00000] Starting user session: OCISessionBegin(con_hdl=0,
usr='/',svchp=0x600000000106aa68, srvhp=0x600000000106de78, usrhp=0x60000000010fc940)
4 ETW000 64 0.130900
4 ETW000 [dev trc ,00000] Assigning user session 0x60000000010fc940 to service context
0x600000000106aa68
4 ETW000 9302 0.140202
4 ETW000 [dev trc ,00000] -->oci_prepare_stmt(con_hdl=0, len=53, stmth_p=0x6000000001077608)
4 ETW000 198 0.140400
4 ETW000 [dev trc ,00000] BEGIN DBMS_APPLICATION_INFO.SET_MODULE(:A0,:A1); END;
4 ETW000 38 0.140438
4 ETW000 [dev trc ,00000] CbApplInfoGet() failed! Ignore, but uninstall callback to avoid more
erroneous calls
4 ETW000 291 0.140729
4 ETW000 [dev trc ,00000] -->oci_prepare_stmt(con_hdl=0, len=54, stmth_p=0x6000000001078660)
4 ETW000 33 0.140762
4 ETW000 [dev trc ,00000] BEGIN DBMS_APPLICATION_INFO.SET_CLIENT_INFO(:A0); END;
4 ETW000 35 0.140797
4 ETW000 [dev trc ,00000] -->oci_prepare_stmt(con_hdl=0, len=0, stmth_p=0x6000000001078660)
4 ETW000 937 0.141734
4 ETW000 [dev trc ,00000] SELECT SID FROM V$MYSTAT WHERE ROWNUM<2
4 ETW000 36 0.141770
4 ETW000 [dev trc ,00000] Connected to session 297. 639 0.142409
4 ETW000 [dev trc ,00000] Now '/@PC1' is connected: con_hdl=0, nls_hdl=0, session_id=297.
4 ETW000 38 0.142447
4 ETW000 [dev trc ,00000] -->oci_prepare_stmt(con_hdl=0, len=0, stmth_p=0x6000000001078660)
4 ETW000 37 0.142484
4 ETW000 [dev trc ,00000] ALTER SESSION SET NLS_SORT = BINARY
4 ETW000 36 0.142520
4 ETW000 [dev trc ,00000] -->oci_prepare_stmt(con_hdl=0, len=0, stmth_p=0x6000000001078660)
4 ETW000 327 0.142847
4 ETW000 [dev trc ,00000] SELECT USERID, PASSWD FROM SAPUSER WHERE USERID IN (:A0, :A1)
4 ETW000 36 0.142883
4 ETW000 [dev trc ,00000] Got SAPSR3's password from OPS$-user 728 0.143611
4 ETW000 [dev trc ,00000] Disconnecting from connection 0 ... 38 0.143649
4 ETW000 [dev trc ,00000] Rolling back transaction ... 31 0.143680
4 ETW000 [dev trc ,00000] Closing user session
(con_hdl=0,svchp=0x600000000106aa68,usrhp=0x60000000010fc940)
4 ETW000 210 0.143890
4 ETW000 [dev trc ,00000] Now I'm disconnected from ORACLE 721 0.144611
4 ETW000 [dev trc ,00000] Connecting as SAPSR3/<pwd>@PC1 on connection 0 (nls_hdl 0) ... (dbsl
700 151208)
4 ETW000 40 0.144651
4 ETW000 [dev trc ,00000] Nls CharacterSet NationalCharSet C
EnvHp ErrHp ErrHpBatch
4 ETW000 37 0.144688
4 ETW000 [dev trc ,00000] 0 UTF8 0
0x6000000001052910 0x600000000105a3c0 0x600000000106ab38
4 ETW000 37 0.144725
4 ETW000 [dev trc ,00000] Assigning username to user session: con_hdl=0,
usrhp=0x60000000010fc940
4 ETW000 35 0.144760
4 ETW000 [dev trc ,00000] Assigning password to user session: con_hdl=0,
usrhp=0x60000000010fc940
4 ETW000 40 0.144800
4 ETW000 [dev trc ,00000] Starting user session: OCISessionBegin(con_hdl=0, usr=SAPSR3/<pwd>,
svchp=0x600000000106aa68, srvhp=0x600000000106de78, usrhp=0x60000000010fc940)
4 ETW000 337 0.145137
4 ETW000 [dev trc ,00000] Assigning user session 0x60000000010fc940 to service context
0x600000000106aa68
4 ETW000 4085 0.149222
4 ETW000 [dev trc ,00000] -->oci_prepare_stmt(con_hdl=0, len=54, stmth_p=0x6000000001077608)
4 ETW000 63 0.149285
4 ETW000 [dev trc ,00000] BEGIN DBMS_APPLICATION_INFO.SET_CLIENT_INFO(:A0); END;
4 ETW000 37 0.149322
4 ETW000 [dev trc ,00000] -->oci_prepare_stmt(con_hdl=0, len=0, stmth_p=0x6000000001077608)
4 ETW000 585 0.149907
4 ETW000 [dev trc ,00000] SELECT SID FROM V$MYSTAT WHERE ROWNUM<2
4 ETW000 36 0.149943
4 ETW000 [dev trc ,00000] Connected to session 297. 350 0.150293
4 ETW000 [dev trc ,00000] Now 'SAPSR3/<pwd>@PC1' is connected: con_hdl=0, nls_hdl=0,
session_id=297.
4 ETW000 38 0.150331
4 ETW000 [dev trc ,00000] -->oci_prepare_stmt(con_hdl=0, len=0, stmth_p=0x6000000001077608)
4 ETW000 38 0.150369
4 ETW000 [dev trc ,00000] ALTER SESSION SET NLS_SORT = BINARY
4 ETW000 34 0.150403
4 ETW000 [dev trc ,00000] -->oci_prepare_stmt(con_hdl=0, len=0, stmth_p=0x6000000001077608)
4 ETW000 294 0.150697
4 ETW000 [dev trc ,00000] SELECT VALUE FROM V$NLS_PARAMETERS WHERE PARAMETER IN
('NLS_LANGUAGE', 'NLS_TERRITORY', 'NLS_CHARACTERSET') ORDER BY PARAM
4 ETW000 66 0.150763
4 ETW000 [dev trc ,00000] ETER
4 ETW000 34 0.150797
4 ETW000 [dev trc ,00000] Database NLS settings: AMERICAN_AMERICA.UTF8 329 0.151126
4 ETW000 [dev trc ,00000] -->oci_prepare_stmt(con_hdl=0, len=0, stmth_p=0x6000000001077608)
4 ETW000 856 0.151982
4 ETW000 [dev trc ,00000] SELECT UPPER(INSTANCE_NAME),HOST_NAME,VERSION,TO_CHAR
(STARTUP_TIME,'MON DD, YYYY, HH24:MI:SS') FROM V$INSTANCE
4 ETW000 36 0.152018
4 ETW000 [dev trc ,00000] DB instance PC1 is running on scmdb001 with ORACLE version
10.2.0.4.0 since NOV 07, 2010, 03:23:10
4 ETW000 349 0.152367
4 ETW000 [dev trc ,00000] -->oci_prepare_stmt(con_hdl=0, len=0, stmth_p=0x6000000001077608)
4 ETW000 38 0.152405
4 ETW000 [dev trc ,00000] SELECT SUBSTR(NAME,1,3), TO_CHAR(CREATED,'YYYYMMDDHHMMSS')
FROM V$DATABASE

HELP! FOR LOOP TO SCROLL THROUGH TABLE AND CREATE DATABASE LINK

Hi,
Here's the scenario, not much of a PL programmer, just basic SQL so really need some help people!
I have 2 tables. 1 contains list of DB's and the other contains rules to follow.
I need to create a loop that goes through the table containing the DB's and on each row a DB link is created (Only 1 link allowed!)
Once created, the schema currently logged in with also has an account on the linked DB in order to run scripts- The scripts are stored centrally hence the requirement for the link to the target DB.
There are numerous scripts that need to be executed and can all be called from 1 script, once executed the loop exists and the database link needs to be dropped.
Once dropped, the first loop continues, creating a DB link for the next DB listed in the table (and all the scripts are fired again)
This continues against all the DB's listed in the table.

Hi BlueShadow,
Thanks again for the response, you've hit the nail on the head. SQL scripts on a unix server, a loop goes through a table 1 at a time. Each row gets a link created and then all the scripts stored on the server are executed against the db linked to. So I'm assuming this is a loop within a loop.
1 loop to go through the table to create the link and then another loop within once connected to execute all the scripts against the connected DB. Once the scripts are run, the loop exits and moves onto the next server and so on until all the servers have the scripts are run.
It's PL/SQL scripts we're after and not shell scripts as this would free us from the OS constraints.
We have to drop the links due to security. Any idea on o

Remote and local databases

let say that i access a oracle form through the web and that form access data from two distributed databases, then will there be a remote database and local database for the user or all the databases will be remote databases to the user

In my opinion.
using local databases -- access tables without DB_link
using Remote databases -- access tables through DB_link

How can i create a new and tableless database using database configuration

How can i create a new and tableless database using database configuration

How can i create a new and tableless database using database configuration
Just don't install the sample schemas. See the installation guide
http://docs.oracle.com/cd/E11882_01/server.112/e10831/installation.htm
Using the Database Configuration Assistant
When you install Oracle Database with the Oracle Universal Installer, the sample schemas are installed by default if you select the Basic Installation option. Selecting the sample schemas option installs all five schemas (HR, OE, PM, IX, and SH) in the database. If you choose not to install the sample schemas at that time, you can add them later by following the instructions in section "Manually Installing Sample Schemas".
Choose a custom install and don't install the sample schemas.
All other schems/tables installed are REQUIRED by Oracle

TimesTen and 4TB database

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