Drop cache group in timesten 11.2.1

Hello,
I am trying to drop an asynchronous cache group in timesten. I follow the below steps to do so:
a) I use the connection string with the DSN, UID, PWD, OracleID, OraclePWD specified
b) If replication policy is 'always', change it to 'manual'
c) Stop replication
d) Drop the AWT cache group (+drop cache group cachegroupname;+)
e) Create the modified AWT
f) Start replication
g) Set replication policy back to 'always'
After step (d), I get the following error:
Command> drop cache group cachegroupname;
+5219: Temporary Oracle connection failure error in OCIServerAttach(): ORA-12541: TNS:no listener rc = -1+
+5131: Cannot connect to backend database: OracleNetServiceName = "servicename", uid = "inputuid", pwd is hidden, TNS_ADMIN = "/opt/TT/linux/info", ORACLE_HOME= "/opt/TT/linux/ttoracle_home/instantclient_11_1"+
+5109: Cache Connect general error: BDB connection not open.+
The command failed.
Command>
Does the error suggest that cache connect has a problem? Should I restart the timesten daemon and try again? Please let me know what the real problem is.
Let me know if you need information.
Thanks,
V

The SQL*Plus problem is simply because you don't have all the correct directories listed in LD_LIBRARY_PATH. It's likely that your .profile (or equivalenbt) was setting those based on ORACLE_HOME and if this is now unset that could be he problem. Check that LD_LIBRARY_PATH is set properly and this problem will go away.
The character set issues is potentially more problematic. it is mandatory that the Database character set used by TimesTen exactly matches that of Oracle DB when TT is being used as a cache. If the character sets truly are different then this is very serious and you need to rectify it as many things will fail otherwise. You either need to switch Oracle DB back to US7ASCII (this is probably a big job) or you need to change the TT character set to WE8MSWIN1252.
To accomplish the latter you would:
1. Take a backup of the TT datastore using ttBackup (just for safety).
2. For any non-cache tables (i.e. TT only tables), unload data to flat files using ttBulkCp -o ...
3. Save the schema for the datastore using ttSchema.
4. Stop cache and replication agents.
5. Ensure datastore is unloaded from memory and then destroy the datastore (ttDestroy)
6. Edit sys.odbc.ini to change Datastore character set.
7. Connect to datastore as instance administrator (to create datastore). Create all necessary users and grant required privileges.
8. Set the cahce userid/password (call ttCacheUidPwdSSet(...,...))
9. Start the cache agent.
10. Run the SQL script generated by ttSchema to re-create all database objects (tables and cache groups etc.)
11. Re-populate all non-cache tables from the flat files using ttBulkCp -i
12. Re-load all cache groups using LOAD CACHE GROUP ...
13. restart replication agent.
That's pretty much it (hopefully I have not missed out any vital step).
Chris

Similar Messages

Suggestions required for Read-only cache group in timesten IMDB cache

Hi
In IMDB Cache , If the underlying oracle RAC is having two schemas ( "KAEP" & "AAEP" , having same sturcture and same name of objects ) and want to create a Read-only cache group with AS pair in timesten.
Schema
    KAEP
Table
    Abc1
    Abc2
    Abc3
Schema
    AAEP
Table
    Abc1
    Abc2
    Abc3
Can a read-only cache group be created using union all query ?
The result set of the cache group should contain both schema records in timesten read-only cache group will it be possible ?
Will there be any performance issue?

You cannot create a cache group that uses UNION ALL. The only 'query' capability in a cache group definition is to use predicates in the WHERE clause and these must be simple filter predicates on the tables in the cache group.
Your best approach is to create separate cache groups for these tables in TimesTen and then define one or more VIEWS using UNION ALL in TimesTen in order to present the tables in the way that you want.
Chris

TimesTen Error :5126: A system managed cache group cannot contain non-stand

I have created few cache groups in TimesTen.
And when i fired script to create fillowing cache group its gives me error.
please see the details mentioned below.
CREATE USERMANAGED CACHE GROUP C_TBLSSTPACCOUNTINGSUMMARY
AUTOREFRESH MODE INCREMENTAL INTERVAL 5 SECONDS STATE ON
FROM
schema.tablename
ACCOUNTINGSUMMARYID DOUBLE,
INPUTFILENAME VARCHAR(255) NOT NULL,
ACCOUNTINGSTATUS VARCHAR(255) NOT NULL,
RECORDCOUNT DOUBLE,
LASTUPDATEDDATE DATE NOT NULL,
CREATEDATE TIMESTAMP DEFAULT SYSDATE,
PRIMARY KEY (ACCOUNTINGSUMMARYID),
PROPAGATE);
then error occurs like==>
5121: Non-standard type mapping for column JISPRATCORBILLINGDEV501.TBLSSTPACCOUNTINGSUMMARY.ACCOUNTINGSUMMARYID, cache operations are restricted
5126: A system managed cache group cannot contain non-standard column type mapping
The command failed.

If you have access to Oracle Metalink, Please take a look at the Note:367431.1
Regards,
Sabdar Syed.

How to load cache group?

Dear ChrisJenkins,
My project has a timesten . There is a table (using read only cache group) in timesten.
ex :
create table A as (id number, content varchar(20));
insert into A values (1, 'a1');
insert into A values (2, 'a2');
insert into A values (n, 'an');
commit;
The table (A) loaded 10 rows ('a1' --> 'a10'). if I execute the sql following :
"Load cache group A where id >=2 and id <=11"
, how will the timesten execute the sql above ?
I suggest :
the timesten don't load rows (id=2-->10) because the memory has the rows ,
the timesten only load rows (id=11) because the memory don't has the row
Is it true ?
Thanks,rgds
TuanTA

In your example you are using a regular table not a readonly cache group table. If you are using a readonly cache group then the table would be created like this:
CREATE READONLY CACHE GROUP CG_A
AUTOREFRESH MODE INCREMENTAL INTERVAL 10 SECONDS STATE PAUSED
FROM
ORACLEOWNER.A ( ID NUMBER, CONTENT VARCHAR(20));
This assumes that the table ORACLEOWNER.A already exists in Oracle with the same schema. The table in TimesTen will start off empty. ALso, you cannot insert, delete or update the rows in this table directly in TimesTen (that is why it is called a READONLY caceh group); if you try you will get an error. All data for this table has to originate in Oracle. Let's say that in Oracle you now do the following:
insert into A values (1, 'a1');
insert into A values (2, 'a2');
insert into A values (10, 'a10');
commit;
Stilll the table in TimesTen is empty. We can load the table with the data from Oracle using:
LOAD CACHE GROUP CG_A COMMIT EVERY 256 ROWS;
Mow the table in TimesTen had the same rows as the table in Oracle. Also, the LOAD operation changes the AUTOREFRESH state from PAUSED to ON. You still cannot directly insert/update and delete to this table in TimesTen but any data changes arising due to DML executed on the Oracle table will be captured and propagates to TimesTen by the AUTOREFRESH mechanism. If you now did, in Oracle:
UPDATE A SET CONTENT = 'NEW' WHERE ID = 3;
INSERT INTO A VALUES (11, 'a11');
COMMIT;
Then, after the next autorefresh cycle (every 10 seconds in this example), the table in TimesTen would contain:
1, 'a1'
2, 'a2'
3, 'NEW'
4, 'a4'
5, 'a5'
6, 'a6'
7, 'a7'
8, 'a8'
9, 'a9'
10, 'a10'
11, 'a11'
So, your question cannot apply for READONLY cache groups...
If you used a USERMANAGED cache group then your question could apply (as long as the cache group was not using AUTOREFRESH and the table had not been marked READONLY). In that case a LOAD CACHE GROUP cpmmand will only load qualifying rows that do not already exist in the cache table in TimesTen. If rows with the same primary key exist in Oracle they are not loaded, even if the other columns have different values to those in TimesTen. Contrast this with REFRESH CACHE GROUP which will replace all matching rows in TimesTen with the rows from Oracle.
Chris

Uanble to create Cache Group from Cache Administrator

Folks,
I am attempting to create a cache group from the Cache Administrator.
I have set all the data source properties and am able to login to the data source but when I attempt to create a cache group i.e. I specify the name & type of cache group, I get this message in red at the bottom saying "Gathering table information, please wait" and... that's it. Nothing happens!
I am able to move the cursor etc. but the cache group is not defined.
Anybody have any suggestions as to what I'm doing wrong? Any help would be appreciated!
keshava

You cannot have multiple root tables within one cache group. The requirements for putting tables together into one cache group are very strict; there must be one top level table (the root table) and there can optionally be multiple child tables. The child tables must be related via foreign keys either to the root table or to a child table higher in the hierarchy.
The solution for your case is to put one ofthe root tables and the child table into one cache group and the other root table into a separate cache group. If you do that you need to take care of a few things:
1. You cannot define any foreign keys between tables in different cache groups in TimesTen (the keys can exist in Oracle) so the application must enforce the referential integrity itself for those cases.
2. If you load data into one cache group (using LOAD CACHE GROUP or 'load on demand') then Timesten will not automatically load the corresponding data into the other cache group (sicne it does not know about the relationship). The application will need to load the data into the other cache group explicitly.
There are no issues regarding transactional consistency when changes are pushed to Oracle. TimesTen correctly maintains and enforces transactional consistency regardless of how tables are arranged in cache groups.
Chris

RAC degradation by cache group

Hi:
since 3 week ago, I have been seeing that my oracle RAC database has been degraded.
according to enterprise manager, we have found that timestend process has many commits enqueues. On Oracle RAC there is an application, which is performing close to 200 inserts per second. But in a moment on time, timesten enqueues cause the inserts for this application enqueues also on commits, so my oracle application get delays on commits.
Cache group on timesten to oracle has been declared as readonly using autorefresh, but this refresh is executing on 1 minute interval. I have 6 cache group using this configuration, the fact is that I have 3 databases using those cache groups and replicas for each of them.
have Someone had this kind of issue like this ?

It's just a numerical designation for that particular protocol version of Cache Connect.

A question about cache group error in TimesTen 7.0.5

hello, chris:
we got some errors about cache group :
2008-09-21 08:56:15.99 Err : ORA: 229574: ora-229574-3085-ogTblGC00405: Failed calling OCI function: OCIStmtFetch()
2008-09-21 08:56:15.99 Err : ORA: 229574: ora-229574-3085-raUtils00373: Oracle native error code = 1405, msg = ORA-01405: fetched column value is NULL
2008-09-21 08:56:28.16 Err : ORA: 229576: ora-229576-2057-raStuff09837: Unexpected row count. Expecting 1. Got 0.
and the exact scene is: our oracle server was restart for some reason, but we didnot restart the cache group agent. then iit start appear those errors informations.
we want to know, if the oracle server restart, whether we need to restart cache agent?? thank you..

Yes, the tracking table will track all changes to the associated base table. Only changes that meet the cache group WHERE clause predicate will be refreshed to TimesTen.
The tracking table is managed automatically by the cache agent. As long as the cache agent is running and AUTOREFRESH is occurring the table will be space managed and old data will be purged.
It is okay if very occasionally an AUTOREFRESH is unable to complete within its defined interval but if this happens with any regularity then this is a problem since this situation is unsustainable. To remedy this you need to try one or more of:
1. Tune execution of AUTOREFRESH queries in Oracle. This may mean adding additional indexes to some of the cached Oracle tables. There is an article on this in MetaLink (doc note 473493.1).
2. Increase the AUTOREFRESH interval so that a refresh can always complete within the defined interval.
In any event it is important that you have enough space to cope with the 'steady state' size of the tracking table. If the cache agent will not be running for any significant length of time you need to manually cleanup the tracking table. In TimesTen 11g a script to do this is provided but it is not officially supported in TimesTen 7.0.
If the rate of updates on the base table is such that you cannot arrive at a sustainable situation by tuning etc. then you will need to consider more radical options such as breaking the table into multiple separate tables :-(
Chris

Error in creating Cache Group

Hi,
When i tried to create cache group i am getting below error
CREATE READONLY CACHE GROUP customer_orders
FROM myuser.customer
(cust_num NUMBER(6) NOT NULL,
region VARCHAR2(10),
name VARCHAR2(50),
address VARCHAR2(100),
PRIMARY KEY(cust_num)),
myuser.orders
(ord_num NUMBER(10) NOT NULL,
cust_num NUMBER(6) NOT NULL,
when_placed DATE NOT NULL,
when_shipped DATE NOT NULL,
PRIMARY KEY(ord_num),
FOREIGN KEY(cust_num) REFERENCES myuser.customer(cust_num)) ;
5220: Permanent Oracle connection failure error in OCIServerAttach(): ORA-12154: TNS:could not resolve the connect identifier specified rc = -1
5131: Cannot connect to backend database: OracleNetServiceName = "orcl_db", uid = "XXXXXXX", pwd is hidden, TNS_ADMIN = "C:\TimesTen11.2.2", ORACLE_HOME= ""
But my Oracle database Name is MYdatabase
Oracle LSNRCTL
LSNRCTL> status
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1522)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for 32-bit Windows: Version 11.2.0.2.0 - Production
Start Date 07-AUG-2012 10:31:38
Uptime 4 days 3 hr. 1 min. 55 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File C:\TimesTen11.2.2\listener.ora
Listener Log File E:\app\XXXXXXX\diag\tnslsnr\localhost\listener\alert\log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1522ipc)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1522)))
Services Summary...
Service "MYdatabaseXDB" has 1 instance(s).
Instance "MYdatabase", status READY, has 1 handler(s) for this service...
Service "MYdatabase" has 1 instance(s).
Instance "MYdatabase", status READY, has 1 handler(s) for this service...
Service "orcl" has 1 instance(s).
Instance "orcl", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
how to change OracleNetServiceName = "orcl_db" to OracleNetServiceName = "MYdatabase"
Thanks!

You should create the cache groups by using cachadmin user, not use object owner user.
In Oracle DB:
SQL> @grantCacheAdminPrivileges "cacheadmin"
Please enter the administrator user id
The value chosen for administrator user id is cacheadmin
***************** Initialization for cache admin begins ******************
0. Granting the CREATE SESSION privilege to CACHEADMIN
1. Granting the TT_CACHE_ADMIN_ROLE to CACHEADMIN
2. Granting the DBMS_LOCK package privilege to CACHEADMIN
3. Granting the RESOURCE privilege to CACHEADMIN
4. Granting the CREATE PROCEDURE privilege to CACHEADMIN
5. Granting the CREATE ANY TRIGGER privilege to CACHEADMIN
6. Granting the DBMS_LOB package privilege to CACHEADMIN
7. Granting the SELECT on SYS.ALL_OBJECTS privilege to CACHEADMIN
8. Granting the SELECT on SYS.ALL_SYNONYMS privilege to CACHEADMIN
9. Checking if the cache administrator user has permissions on the default
tablespace
     Permission exists
11. Granting the CREATE ANY TYPE privilege to CACHEADMIN
********* Initialization for cache admin user done successfully *********
SQL>In TimesTen:
Command> CREATE USER cacheadmin IDENTIFIED BY oracle;
User created.
Command> GRANT CREATE SESSION, CACHE_MANAGER, CREATE ANY TABLE, DROP ANY TABLE TO cacheadmin;
Command>
Command> CREATE USER oratt IDENTIFIED BY oracle;
User created.
Command> grant create session to oratt;
Command>
[oracle@tt1 ~]$ ttIsql "DSN=db_cache;UID=cacheadmin;PWD=oracle;OraclePWD=oracle"
Copyright (c) 1996-2010, Oracle. All rights reserved.
Type ? or "help" for help, type "exit" to quit ttIsql.
connect "DSN=db_cache;UID=cacheadmin;PWD=oracle;OraclePWD=oracle";
Connection successful: DSN=db_cache;UID=cacheadmin;DataStore=/u01/app/oracle/datastore/db_cache;DatabaseCharacterSet=AL32UTF8;ConnectionCharacterSet=US7ASCII;DRIVER=/u01/app/oracle/product/11.2.1/TimesTen/tt1/lib/libtten.so;PermSize=100;TempSize=32;TypeMode=0;CacheGridEnable=0;OracleNetServiceName=ORCL;
(Default setting AutoCommit=1)
Command> call ttCacheUidPwdSet('cacheadmin','oracle');
Command>
Command> CREATE READONLY CACHE GROUP readcache
       >   AUTOREFRESH INTERVAL
       >   5 SECONDS
       > FROM oratt.readtab (
       >        a NUMBER NOT NULL PRIMARY KEY,
       >        b VARCHAR2(100) );
Command> Additionally dont forget to issue the grants for cacheadmin user in Oracle DB
SQL> GRANT SELECT ON readtab TO cacheadmin;
Grant succeeded.Regards,
Gennady

Active stanby cache group replication on same machine

Hi,
To validate a replication design, I am trying to set up an active standby pair of a cache group on a my linux(ubuntu) laptop. I have setup two datastores on the same TT instance - cgdsn and master2
I created a usermanaged cache group on the active TT DS and started an active standby replication using following sql:
command>create active standby pair cgdsn on "simu-t61" , master2 on "simu-t61" return receipt STORE cgdsn PORT 21000 TIMEOUT 30 STORE master2 PORT 20000 TIMEOUT 30;
I read in an earlier thread that replicating on same machine will require ports to be specifically provided to the replication command.
Here is the output to check the status of the master datastore:
<output>
oracle@simu-t61:~$ ttrepadmin -showstatus cgdsn_tt70
Enter password for 'ora':
Replication Agent Status as of: 2010-03-14 20:22:43
DSN : cgDSN_tt70
Process ID : 18496 (Started)
Replication Agent Policy : manual
Host : SIMU-T61
RepListener Port : 21000
Last write LSN : 0.19340024
Last LSN forced to disk : 0.19340024
Replication hold LSN : 0.19320752
Replication Peers:
Name : MASTER2
Host : SIMU-T61
Port : 0 (Not Connected)
Replication State : STARTED
Communication Protocol : 24
TRANSMITTER thread(s):
For : MASTER2
Start/Restart count : 1
Send LSN : 0.19320752
Transactions sent : 0
Total packets sent : 0
Tick packets sent : 0
Total Packets received: 0
</output>
I then tried to duplicate the standby but got the following error
<output>
oracle@simu-t61:~$ ttRepAdmin -duplicate -from cgdsn_tt70 -host "simu-t61" -keepCG -cacheUid ora -cachePwd ora -localhost "simu-t61" -verbosity 2 "dsn=master2_tt70;UID=;PWD="
Enter password for 'ora':
*20:27:02 Contacting remote main daemon at 127.0.1.1 port 17000*
*20:27:02 Duplicate Operation Ends*
TT12039: Could not get port number of TimesTen replication agent on remote host. Either the replication agent was not started, or it was just started and has not communicated its port number to the TimesTen daemon
</output>
From log file
<output>
00:30:33.20 Info: : 8143: Got hello from pid 20405, type utility (/usr/lib/oracle/xe/TimesTen/tt70/bin/ttRepAdminCmd -duplicate -from cgdsn_tt70 -host simu-t61 -keepCG -cacheUid ora -cachePwd ora -localhost simu-t61 -verbosity 2 dsn=master2_tt70;UID=;PWD= )
00:30:33.20 Info: : 8143: Accepting incoming message from 127.0.1.1 with remote protocol (we are TimesTen 7.0.5.0.0.tt70, they are TimesTen 7.0.5.0.0.tt70 remote)
00:30:33.20 Info: : 8143: 20405 ------------------: Utility program registering
00:30:33.20 Info: : 8143: maind: done with request #1336.4606
00:30:33.20 Info: : 8143: maind 1336: socket closed, calling recovery (last cmd was 4607)
00:30:33.20 Info: : 8143: Starting daRecovery for 20405
00:30:33.20 Info: : 8143: Finished daRecovery for pid 20405.
00:30:33.20 Info: : 8143: maind got #1335.4608 from 20405, not in restore: path=/tmp/master2
*00:30:33.20 Err : : 8143: TT14000: TimesTen daemon internal error: Got notInRestore command with unknown data store '/tmp/master2'*
00:30:33.20 Info: : 8143: maind: done with request #1335.4608
00:30:33.20 Info: : 8143: maind 1335: socket closed, calling recovery (last cmd was 4608)
00:30:33.20 Info: : 8143: Starting daRecovery for 20405
00:30:33.20 Info: : 8143: 20405 ------------------: process exited
00:30:33.20 Info: : 8143: Finished daRecovery for pid 20405.
00:30:34.14 Info: REP: 20246: CGDSN:transmitter.c(1358): TT16114: Attempting to connect to MASTER2 on SIMU-T61 (127.0.1.1); port: 20000
00:30:35.14 Info: REP: 20246: CGDSN:transmitter.c(1358): TT16114: Attempting to connect to MASTER2 on SIMU-T61 (127.0.1.1); port: 20000
00:30:36.14 Info: REP: 20246: CGDSN:transmitter.c(1358): TT16114: Attempting to connect to MASTER2 on SIMU-T61 (127.0.1.1); port: 20000
0
</output>
Output from netstat
<output>
oracle@simu-t61:~$ netstat -a | grep 21000
tcp 0 0 *:21000 *:* LISTEN
</output>
Am I somehow supposed to provide the port number of my active ds in the duplicate command?
thanks,
Raj
Edited by: user8936481 on Mar 14, 2010 9:41 PM

Thanks Chris and jspalmer, changing the -from fixed the problem! This and the documentation are the only places where I seem to get any help on TT....
Now, I moved from my previous problem to the next one :-) Here is the output
<output>
oracle@simu-t61:~$ ttRepAdmin -duplicate -from cgdsn -host "simu-t61" -uid ora -pwd ora -keepCG -cacheUid ora -cachePwd ora -localhost "simu-t61" -verbosity 2 "dsn=master2_tt70;UID=;PWD="
Enter password for 'ora':
09:21:48 Contacting remote main daemon at 127.0.1.1 port 17000
09:21:48 Contacting the replication agent for CGDSN ON SIMU-T61 (127.0.1.1) port 21000
09:21:48 Beginning transfer from CGDSN ON SIMU-T61 to MASTER2 ON SIMU-T61
09:21:59 Checkpoint transfer 10 percent complete
09:21:59 Checkpoint transfer 100 percent complete
09:21:59 Checkpoint transfer phase complete
09:22:00 Log transfer 100 percent complete
09:22:00 Log transfer phase complete
09:22:00 Transfer complete
09:22:04 Duplicate Operation Ends
TT12078: Failed to reset is_local_store
TT12078: TT15001: User lacks privilege WRITE -- file "comp.c", lineno 4620, procedure "sbPtCheckPriv". File: repSelf.c, line: 946
</output>
My TT internal user was created with following commands:
ttIsql TT_tt70
Command> CREATE USER ora IDENTIFIED BY 'ora';
Command> GRANT ADMIN, DDL TO ora;
Reading the error I granted 'WRITE' to the user and ran the -duplicate command again but it told me :
<output>
09:26:39 Duplicate Operation Ends
TT16231: The duplicate operation on this store was not successfully completed -- file "db.c", lineno 10493, procedure "sbDbConnect"
</output>
That's probably because I had already run the command before granting WRITE. So I tried to drop the master2 but it tells me that cache groups must be dropped first. So I tried to ttIsql into master2 but it would not let me do that either! Again it shows me the error:
<output>
oracle@simu-t61:~$ ttisql master2_tt70
Copyright (c) 1996-2008, Oracle. All rights reserved.
Type ? or "help" for help, type "exit" to quit ttIsql.
All commands must end with a semicolon character.
connect "DSN=master2_tt70";
Enter password for 'ora':
*16231: The duplicate operation on this store was not successfully completed*
The command failed.
Done.
</output>
What shall I try next?

Problem creating cache group for a table with data type varchar2(1800 CHAR)

Hi,
I am using TimesTen 7.0 with Oracle 10.2.0.4 server. While creating Cache Group for one of my table I'm getting the following error.
5121: Non-standard type mapping for column TICKET.DESCRIPTION, cache operations are restricted
5168: Restricted cache groups are deprecated
5126: A system managed cache group cannot contain non-standard column type mapping
The command failed.
One of my filed type in oracle table is Varchar2(1800 CHAR). If I change the filed size to <=1000 it (E.g. Varchar2(1000 CHAR)) then the Create Cache command works fine.
MyDatabase Character Set is UTF8.
Is it possible to solve without changing the filed size in the Oracle Table?
Request your help on this.
Thanks,
Sunil

Hi Chris.
The TimesTen server and the Oracle Client is installed on a 32-bit system.
1. ttVersion
TimesTen Release 7.0.5.0.0 (32 bit Linux/x86) (timesten122:17000) 2008-04-04T00:09:04Z
Instance admin: root
Instance home directory: /appl/TimesTen/timesten122
Daemon home directory: /var/TimesTen/timesten122
Access control enabled.
2. Oracle DB details
SQL> select * from v$version;
BANNER
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bi
PL/SQL Release 10.2.0.3.0 - Production
CORE 10.2.0.3.0 Production
TNS for Linux: Version 10.2.0.3.0 - Production
NLSRTL Version 10.2.0.3.0 - Production
Oracle Client - Oracle Client 10.2.0.4 running in a 32 bit Linux/x86
3. ODBC Details
Driver=/appl/TimesTen/timesten122/lib/libtten.so
DataStore=/var/TimesTen/data
PermSize=1700
TempSize=244
PassThrough=2
UID=testuser
OracleId=oraclenetservice
OraclePwd=testpwd
DatabaseCharacterSet=UTF8
Thanks,
Sunil

How Insert Work on global cache group?

Hi all , i'm doing some test about how many transactions for second TimesTen can process.
With a normal configuration "direct" i reached 5200 transaction for second, on my machine (OS windows normal work station).
now i'm using the global cache groups because we need more then one DataSource , and they have to be syncro, one with each other.
And how i read in the guide the global cache group are perfect for this purpose.
After configured the 2 environment with different DataBase TimesTen (those machine are server SUN, much better of my work station :P), i tried a simple test
of insert on a single node.
But i reached only 1500 as maximum value of transactions for second.
The 5200 value when testing on my work station was with normal Dynamic Cache Group, not Global. So i was thinking if this performance issue was related on how the Insert statement work on a global cache group.
Some questions:
1) before the insert is done on Oracle, the Cache Group do some query on the other cache global group to avoid some conflicts on primary key?
2) there is any operation performed from global cache to others when a statement is sendend?
The 2 global cache anyway are working well, locking and changing owner on a instance cache so no problems detected atm are about " how they have to work":).
The problem is only that we need that the global cache do it more and more faster :P at last the 5200 transaction for second i reached on my work station.
Thanks in advance for any suggestion.
P.S.:I don't know much about the server configuraion (SO solaris some version) but anyway good machines :).

Okay, the rows here are quite large so you need to do some tuning. In the ODBC (DSN) parameters I see that you are using the default log buffer abd log file sizes. these are totally inadequate for this kind of workload. You should increase both to a larger value. For this kind of workloads typial values would be in the range of 256 MB to 1024 MB for both log buffer and log file size. If you are using 32-bit TimesTen you may be constrained on how large you can make these sicne the log buffer is part of the overall datastore memory allocation wh9ich on 32-bit platforms is quite limited. On 64-bit TimesTen you have no such restriction (as long as the machine has enough memory). Here is an example of the directives you would use to set both to 1 GB. The key one is the log buffer size but it is important that LogFileSize is >= LogBufMB.
[my_ds]
LogBufMB=1024
LogFileSize=1024
For this change to take effect you need to shutdown (unload from memory) and restart (load back into memory) the datastore.
Secondly, it's hard to be sure from your example code but it looks like maybe you are pre-paring the INSERT each time you execute it? If that is the case this is very expensive and unnecessary. You only need to prepare once and then you can execute many times as follows:
insPs = connection.prepareStatement("Insert into test.transactions (ID_ ,NUMBE,SHORT_CODE,REQUEST_TIME) Values (?,?,?,?)");
for (int i=1; i < 1000000; i++)
insPs.setString(1,""+getSequence());
insPs.setString(2,"TEST_CODE");
insPs.setString(3,"TT Insert test");
insPs.setTimestamp(4, new Timestamp(System.currentTimeMillis()));
insPs.execute();
connection.commit();
This should improve performance noticeably. mif you can get away with only comiting every 'N' inserts you will see a further uplift. For example:
int COMMIT_INTVL = 100;
for (int i=1; i < 1000000; i++)
insPs.setString(1,""+getSequence());
insPs.setString(2,"TEST_CODE");
insPs.setString(3,"TT Insert test");
insPs.setTimestamp(4, new Timestamp(System.currentTimeMillis()));
insPs.execute();
if ( (i % COMMIT_INTVL) == 0 )
connection.commit();
connection.commit();
And lastly, the fastest way of all is to use JDBC batch operations; see the JDBC documentation about batch operations. That will improve insert performance still more.
Lastly, a word of caution. Although you will probably be able to easily achieve more than 5000 inserts per second into TimesTen, TimesTen may not be able to push the data to oracle at this rate. the rate of push to Oracle is likely to be significantly slower. Thus if you are executing a continuous high volume insert workload into TimesTen two things will happen; (a) the datastore will become fiull and unable to accepot any more inserts until you explicitly remove some data and (b) a backlog will build up (in the TT transaction logs on disk) of data waiting to be pushed to Oracle.
This kind of setup is not really suited to support sustained high insert levels; you need to look at the maximum that can be sustained for the whole application -> TimesTen -> Oracle pathway. Of course, if the workload is 'bursty' then this may not be an issue at all.
Chris

More than one root table ,how to design cache group ?

hi,
each cache group have onle one root table , many child table ,if my relational model is :
A(id number,name ....,primary key id)
B(id number,.....,primary key id)
A_B_rel (aid number,bid number,foreign key aid referenc a (id),
foreign key bid referenc b(id))
my select statement is "select ... from a,b,a_b_rel where ...."，
i want to cache these three table , how should i create cache group ?
my design is three awt , Cache group A for A , Cache Group b for b, Cache group ab to a_b_rel ?
are there other better solution ?

As you have discovered, you cannot put all three of these tables into one cache group. For READONLY cache groups the solution is simple, put two of the tables (say A and A_B) in one cache group and the other table (B) in a different cache group and make sure that both use the same AUTOREFRESH interval.
For your case, using AWT cache groups, the situation is a bit mnore complicated. You must cache the tables as two different cache groups as mentioned above, but you cannot define a foreign key relationship in TimesTen between tables in different cache groups. Hence you will need to add logic to your application to check and enforce the 'missing' foreignb key relationship (B + A_B in this example) to ensure that you do not inadvertently insert data that would violate the FK relationship defined in Oracle. Otherwise you could insert invalid data in TimesTen and this would then fail to propagate to Oracle.
Chris

How to query data from grid cache group after created global AWT group

It is me again.
as I mentioned in my previous posts, I am in progress of setup IMDB grid environment, and now I am at stage of creating cache group. and I created global AWT cache group on one node(cachealone2), but I can not query this global cache group from another node(cachealone1)
thanks Chirs and J, I have done successfully setup IMDB grid env, and have two node in this grid as below
Command> call ttGridNodeStatus;
< MYGRID, 1, 1, T, igs_imdb02, MYGRID_cachealone1_1, 10.214.10.176, 5001, <NULL>, <NULL>, <NULL>, <NULL>, <NULL> >
< MYGRID, 2, 1, T, igsimdb01, MYGRID_cachealone2_2, 10.214.10.119, 5002, <NULL>, <NULL>, <NULL>, <NULL>, <NULL> >
2 rows found.
and I create group ATW cache group on cachealone2
Command> cachegroups;
Cache Group CACHEUSER.SUBSCRIBER_ACCOUNTS:
Cache Group Type: Asynchronous Writethrough global (Dynamic)
Autorefresh: No
Aging: LRU on
Root Table: ORATT.SUBSCRIBER
Table Type: Propagate
1 cache group found.
Command> SELECT * FROM oratt.subscriber;
0 rows found.
however I can not query this from another node cachealone1
Command> SELECT * FROM oratt.subscriber WHERE subscriberid = 1004;
2206: Table ORATT.SUBSCRIBER not found
The command failed.
Command> SELECT * FROM oratt.subscriber WHERE subscriberid = 1004;
2206: Table ORATT.SUBSCRIBER not found
The command failed.
Command> SELECT * FROM oratt.subscriber;
2206: Table ORATT.SUBSCRIBER not found
this is example from Oracle docs, I an not sure where I missed for this. thanks for your help.

Sounds like you have not created the Global AWT cache groupo in the second datastore? There is a multi-step process needed to roll out a cache grid and various things must be done on each node in the correct order. have you done that?
Try checking out the QuickStart example here:
http://download.oracle.com/otn_hosted_doc/timesten/1121/quickstart/index.html
Chris

About cache group

一个程序向TimesTen的数据表中插入数据能正常运行。但这个表和ORACLE做Cache Group时就不行。
I have a wired problem: a program can insers data into a table of TimesTen when there is no Cache Group with oracle.
However, it can not do this while it is connected to oracle using cache group. Any idea why this happens?
error message:
*** ERROR in tt_main.c, line 90:
*** [TimesTen][TimesTen 7.0.3.0.0 ODBC Driver][TimesTen]TT5102: Cannot load backend library 'libclntsh.so' for Cache Connect.
OS error message 'ld.so.1: test_C: ???: libclntsh.so: ????: ???????'. -- file "bdbOciFuncs.c", lineno 257,
procedure "loadSharedLibrary()"
*** ODBC Error/Warning = S1000, Additional Error/Warning = 5102

I think I can exculde the above possibilities, as I have checked all the settings above.
We could use SQL statements as input, and inserting and query can be done at both ends.
It is only the program that does not work. My "connection string" is the following:
connstr=====DSN=UTEL7;UID=utel7;PWD=utel7;AutoCreate=0;OverWrite=0;Authenticate=1
Maybe it is a mistaken properity, or permission, or a switch parameter? Please give some suggestions.
Thank you very much.
Create cache group command is:
Create Asynchronous Writethrough Cache Group utel7_load
From
utel7.load(col0 binary_float, col1 binary_float ......
My odbc.ini is the following:
# Copyright (C) 1999, 2007, Oracle. All rights reserved.
# The following are the default values for connection attributes.
# In the Data Sources defined below, if the attribute is not explicitly
# set in its entry, TimesTen 7.0 uses the defaults as
# specified below. For more information on these connection attributes,
# see the accompanying documentation.
# Lines in this file beginning with # or ; are treated as comments.
# In attribute=_value_ lines, the value consists of everything
# after the = to the end of the line, with leading and trailing white
# space removed.
# Authenticate=1 (client/server only)
# AutoCreate=1
# CkptFrequency (if Logging == 1 then 600 else 0)
# CkptLogVolume=0
# CkptRate=0 (0 = rate not limited)
# ConnectionCharacterSet (if DatabaseCharacterSet == TIMESTEN8
# then TIMESTEN8 else US7ASCII)
# ConnectionName (process argv[0])
# Connections=64
# DatabaseCharacterSet (no default)
# Diagnostics=1
# DurableCommits=0
# ForceConnect=0
# GroupRestrict (none by default)
# Isolation=1 (1 = read-committed)
# LockLevel=0 (0 = row-level locking)
# LockWait=10 (seconds)
# Logging=1 (1 = write log to disk)
# LogAutoTruncate=1
# LogBuffSize=65536 (measured in KB)
# LogDir (same as checkpoint directory by default)
# LogFileSize=64 (measured in MB)
# LogFlushMethod=0
# LogPurge=1
# MatchLogOpts=0
# MemoryLock=0 (HP-UX, Linux, and Solaris platforms only)
# NLS_LENGTH_SEMANTICS=BYTE
# NLS_NCHAR_CONV_EXCP=0
# NLS_SORT=BINARY
# OverWrite=0
# PermSize=2 (measured in MB; default is 2 on 32-bit, 4 on 64-bit)
# PermWarnThreshold=90
# Preallocate=0
# PrivateCommands=0
# PWD (no default)
# PWDCrypt (no default)
# RecoveryThreads=1
# SQLQueryTimeout=0 (seconds)
# Temporary=0 (data store is permanent by default)
# TempSize (measured in MB; default is derived from PermSize,
# but is always at least 6MB)
# TempWarnThreshold=90
# TypeMode=0 (0 = Oracle types)
# UID (operating system user ID)
# WaitForConnect=1
# Oracle Loading Attributes
# OracleID (no default)
# OraclePWD (no default)
# PassThrough=0 (0 = SQL not passed through to Oracle)
# RACCallback=1
# TransparentLoad=0 (0 = do not load data)
# Client Connection Attributes
# ConnectionCharacterSet (if DatabaseCharacterSet == TIMESTEN8
# then TIMESTEN8 else US7ASCII)
# ConnectionName (process argv[0])
# PWD (no default)
# PWDCrypt (no default)
# TTC_Server (no default)
# TTC_Server_DSN (no default)
# TTC_Timeout=60
# UID (operating system user ID)
[ODBC Data Sources]
TT_tt70=TimesTen 7.0 Driver
TpcbData_tt70=TimesTen 7.0 Driver
TptbmDataRepSrc_tt70=TimesTen 7.0 Driver
TptbmDataRepDst_tt70=TimesTen 7.0 Driver
TptbmData_tt70=TimesTen 7.0 Driver
BulkInsData_tt70=TimesTen 7.0 Driver
WiscData_tt70=TimesTen 7.0 Driver
RunData_tt70=TimesTen 7.0 Driver
CacheData_tt70=TimesTen 7.0 Driver
Utel7=TimesTen 7.0 Driver
TpcbDataCS_tt70=TimesTen 7.0 Client Driver
TptbmDataCS_tt70=TimesTen 7.0 Client Driver
BulkInsDataCS_tt70=TimesTen 7.0 Client Driver
WiscDataCS_tt70=TimesTen 7.0 Client Driver
RunDataCS_tt70=TimesTen 7.0 Client Driver
# Instance-Specific System Data Store
# A predefined instance-specific data store reserved for system use.
# It provides a well-known data store for use when a connection
# is required to execute commands.
[TT_tt70]
Driver=/oracle/timesten/TimesTen/tt70/lib/libtten.so
DataStore=/oracle/timesten/TimesTen/tt70/info/TT_tt70
DatabaseCharacterSet=US7ASCII
# Data source for TPCB
# This data store is created on connect; if it doesn't already exist.
# (AutoCreate=1 and Overwrite=0). For performance reasons, database-
# level locking is used. However, logging is turned on. The initial
# size is set to 16MB.
[TpcbData_tt70]
Driver=/oracle/timesten/TimesTen/tt70/lib/libtten.so
DataStore=/oracle/timesten/TimesTen/tt70/info/DemoDataStore/TpcbData
DatabaseCharacterSet=US7ASCII
PermSize=16
WaitForConnect=0
Authenticate=0
# Data source for TPTBM demo
# This data store is created everytime the benchmark is run.
# Overwrite should always be 0 for this benchmark. All other
# attributes may be varied and performance under those conditions
# evaluated. The initial size is set to 20MB and durable commits are
# turned off.
[TptbmData_tt70]
Driver=/oracle/timesten/TimesTen/tt70/lib/libtten.so
DataStore=/oracle/timesten/TimesTen/tt70/info/DemoDataStore/TptbmData
DatabaseCharacterSet=US7ASCII
PermSize=20
Overwrite=0
Authenticate=0
# Source data source for TPTBM demo in replication mode
# This data store is created everytime the replication benchmark demo
# is run. This datastore is set up for the source data store.
[TptbmDataRepSrc_tt70]
Driver=/oracle/timesten/TimesTen/tt70/lib/libtten.so
DataStore=/oracle/timesten/TimesTen/tt70/info/DemoDataStore/TptbmDataRepSrc_tt70
DatabaseCharacterSet=US7ASCII
PermSize=20
Overwrite=0
Authenticate=0
# Destination data source for TPTBM demo in replication mode
# This data store is created everytime the replication benchmark demo
# is run. This datastore is set up for the destination data store.
[TptbmDataRepDst_tt70]
Driver=/oracle/timesten/TimesTen/tt70/lib/libtten.so
DataStore=/oracle/timesten/TimesTen/tt70/info/DemoDataStore/TptbmDataRepDst_tt70
DatabaseCharacterSet=US7ASCII
PermSize=20
Overwrite=0
Authenticate=0
# Data source for BULKINSERT demo
# This data store is created on connect; if it doesn't already exist
# (AutoCreate=1 and Overwrite=0).
[BulkInsData_tt70]
Driver=/oracle/timesten/TimesTen/tt70/lib/libtten.so
DataStore=/oracle/timesten/TimesTen/tt70/info/DemoDataStore/BulkInsData
DatabaseCharacterSet=US7ASCII
LockLevel=1
PermSize=32
WaitForConnect=0
Authenticate=0
# Data source for WISCBM demo
# This data store is created on connect if it doesn't already exist
# (AutoCreate=1 and Overwrite=0). For performance reasons,
# database-level locking is used. However, logging is turned on.
[WiscData_tt70]
Driver=/oracle/timesten/TimesTen/tt70/lib/libtten.so
DataStore=/oracle/timesten/TimesTen/tt70/info/DemoDataStore/WiscData
DatabaseCharacterSet=US7ASCII
LockLevel=1
PermSize=16
WaitForConnect=0
Authenticate=0
# Default Data source for TTISQL demo and utility
# Use default options.
[RunData_tt70]
Driver=/oracle/timesten/TimesTen/tt70/lib/libtten.so
DataStore=/oracle/timesten/TimesTen/tt70/info/DemoDataStore/RunData
DatabaseCharacterSet=US7ASCII
Authenticate=0
# Sample Data source for the xlaSimple demo
# see manual for discussion of this demo
[Sample_tt70]
Driver=/oracle/timesten/TimesTen/tt70/lib/libtten.so
DataStore=/oracle/timesten/TimesTen/tt70/info/DemoDataStore/Sample
DatabaseCharacterSet=US7ASCII
TempSize=16
PermSize=16
Authenticate=0
# Sample data source using OracleId.
[CacheData_tt70]
Driver=/oracle/timesten/TimesTen/tt70/lib/libtten.so
DataStore=/oracle/timesten/TimesTen/tt70/info/DemoDataStore/CacheData
DatabaseCharacterSet=US7ASCII
OracleId=MyData
PermSize=16
# New data source definitions can be added below. Here is my datastore!!!
[Utel7]
Driver=/oracle/timesten/TimesTen/tt70/lib/libtten.so
DataStore=/oracle/timesten/TimesTen/tt70/tt70_data/utel7
DatabaseCharacterSet=ZHS16GBK
Uid=utel7
Authenticate=0
OracleID=db3
OraclePWD=utel7
PermSize=6000
Connections=20
#permsize*20%
TempSize=400
CkptFrequency=600
CkptLogVolume=256
LogBuffSize=256000
LogFileSize=256

Unable to create cache groups from CASE-SENSITIVE oracle table's name

Hello All
I have some case-sensitive tables in a oracle database and their columns are the same too. I've tried to cache these tables into TimesTen under a read-only cache group. I think timesten cannot find
case-sensitive tables because as soon as I changed name of the tables, the creation could succeeded. What can I do to overcome this issue? I don't want lose case-sensitive feature. Is it because of
I'm using an old version of TimesTen(11.2.1.4.0)

Hi Chris
Thanks for your answer. I'm using SQL Developer(both graphical and by command) to manage Timesten db. When I'm about to select root table for cache group i can see the table and when I
select on it, the caching procedures can not be done and it says your table does not have Primary Key; you can see below that this is not true and the table has two primary key. When I'm
trying to create the cache group via command in work sheet the error is "TT5140: could not find HLR.SUBSCRIBER. may not have privileges"
in Oracle:
CREATE TABLE "HLR"."Subscriber"
"SSI" NUMBER(10,0) NOT NULL ENABLE,
"CCNC" VARCHAR2(50 BYTE) NOT NULL ENABLE,
"Code" VARCHAR2(128 BYTE) DEFAULT NULL NOT NULL ENABLE,
"Account" NVARCHAR2(32),
"Mnemonic" NVARCHAR2(15),
"Region" NVARCHAR2(32),
"UserAddress" NVARCHAR2(32),
"Name" NVARCHAR2(32) NOT NULL ENABLE,
"VPNCode" NUMBER(10,0),
"VPNCCNC" VARCHAR2(50 BYTE),
"SubOrgId" NUMBER(10,0),
"SubscriberTypeId" NUMBER(2,0) DEFAULT 5 NOT NULL ENABLE,
"StatusId" NUMBER(2,0) DEFAULT 1 NOT NULL ENABLE,
"SubscriberClass" NUMBER(2,0),
"DefinedIpAddressId" NUMBER(10,0),
CONSTRAINT "Subscriber_PK" PRIMARY KEY ("SSI", "CCNC") USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT) TABLESPACE "USERS" ENABLE,
CONSTRAINT "FK_DefinedIpAdd_Subscriber" FOREIGN KEY ("DefinedIpAddressId") REFERENCES "HLR"."DefinedIPAddress" ("Id") ENABLE,
CONSTRAINT "Fk_Status_Subscriber" FOREIGN KEY ("StatusId") REFERENCES "HLR"."Status" ("Id") ENABLE,
CONSTRAINT "Fk_SubOrg_Subscriber" FOREIGN KEY ("SubOrgId") REFERENCES "HLR"."SubOrganization" ("Id") ENABLE,
CONSTRAINT "Fk_SubscriberType_Subscriber" FOREIGN KEY ("SubscriberTypeId") REFERENCES "HLR"."SubscriberType" ("Id") ENABLE,
CONSTRAINT "Fk_VPN_Subscriber" FOREIGN KEY ("VPNCode", "VPNCCNC") REFERENCES "HLR"."VPN" ("SSI", "CCNC") ENABLE
in TimesTen:
CREATE READONLY CACHE GROUP "PRO1"
AUTOREFRESH MODE INCREMENTAL INTERVAL 5 MINUTES
STATE PAUSED
FROM "HLR"."Subscriber"
"SSI" NUMBER(10,0) NOT NULL ,
"CCNC" VARCHAR2(50 BYTE) NOT NULL ,
"Code" VARCHAR2(128 BYTE) NOT NULL ,
"Account" NVARCHAR2(32),
"Mnemonic" NVARCHAR2(15),
"Region" NVARCHAR2(32),
"UserAddress" NVARCHAR2(32),
"Name" NVARCHAR2(32) NOT NULL ,
"VPNCode" NUMBER(10,0),
"VPNCCNC" VARCHAR2(50 BYTE),
"SubOrgId" NUMBER(10,0),
"SubscriberTypeId" NUMBER(2,0) DEFAULT 5 NOT NULL ,
"StatusId" NUMBER(2,0) DEFAULT 1 NOT NULL ,
"SubscriberClass" NUMBER(2,0),
"DefinedIpAddressId" NUMBER(10,0),
PRIMARY KEY("CCNC","SSI")
)

Drop cache group in timesten 11.2.1

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