Questions tagged [oracle]

All versions of Oracle database. Add a version-specific tag like oracle-11g-r2 if that context is important in the question. Do not use for Oracle products such as applications or middleware or other database products owned by Oracle, like MySQL or BerkeleyDB.

1,244 questions with no upvoted or accepted answers
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9
votes
0answers
7k views

DBeaver launch script from file

I'm trying to find a good alternative to SQL Developer for performing queries and scripts on Oracle instances. I find DBeaver to be an interesting tool, it has a lot of great features, BUT it seems ...
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1answer
957 views

Oracle Ref Partitioning: Deadlock due to child table row migration

My ordering application uses Oracle 11g Database. This DB has a primary table ORDERS and multiple child tables like ORDER_DETAILS, PLAN etc. ORDERS table is LIST partitioned on STATUS column and all ...
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2answers
112 views

Changes access method for non-correlated subquery

Oracle 11g R2 Unfortunately our application has per row security "features". We have a query that looks about like this: Bad, slow: SELECT someRow, someOtherRow FROM bigTableA a WHERE EXISTS ( ...
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2answers
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Case insensitive search of CLOBs in Oracle 12

Question: What is the most performant way to do a case-insensitive search in a CLOB column? I've simplified the query to easily reproduce the problem. The filedata table can have millions of rows. ...
6
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1answer
3k views

Deferrable Foreign Key Constraints

What are the consequences of making a foreign key constraint DEFERRABLE INITIALLY IMMEDIATE instead of NONDEFERRABLE? This answer on StackOverflow mentions the performance impact that comes with no ...
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1answer
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SQL Developer Data Modeller and Data Dictionary question

I'm not a DBA but I am a (mostly!) competent SQL report writer. Can I trouble you DBAs for some pro-knowledge, please? I can connect SQL Developer to Oracle XE's data dictionary without any problem, ...
4
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1answer
5k views

Oracle Database Server TNS Listener Remote Registration Vulnerability (CVE-2012-1675)

Some of our Internal DBs Oracle installed in Linux and Windows servers have been highlighted with the issue Oracle TNS Listener Remote Poisoning (CVE-2012-1675). This security alert addresses the ...
4
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0answers
339 views

RMAN-06169, but only when backing up via OEM 13c

When running a Level 1 or Level 0 backup via OEM 13c, the following RMAN error causes the run to fail. (The RMAN script is being ran with proper sysdba credentials from OEM 13c.) RMAN-06169: could ...
4
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2answers
152 views

Alert on Table size

I need to create an alert on my application table when it reaches 98% of its threshold. I wrote an SP which checks the rows and logs the information into a log file which was monitored by alert system ...
4
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0answers
1k views

Oracle: built in SQL pretty-print?

Oracle has some packages that will dump objects in SQL format, such as dbms_metadata.set_transform_param. One option that can be set is to "pretty print" the SQL. Is there anything in Oracle that ...
4
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1answer
2k views

How do I identify the remote db agent name to use in create_database_destination on Oracle 11gR2?

I am trying to setup DBMS_SCHEDULER in Oracle 11g to run a remote database job. I have a remote Oracle 11g R2 database on unix and a local one on Windows. I read that you can install the oracle ...
4
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1answer
194 views

Determine weekend based on country

I've a table called BOND which have columns BOND NAME, COUNTRY of ISSUE and ISSUE DATE BOND Country ISSUE_DATE =========================== B1 INDIA 20-AUG-2017 B2 ISRAEL 18-AUG-2017 How ...
3
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1answer
137 views

Autotask 'auto optimizer stats collection' and scheduler jobs logging

We have a DB hosting Peoplesoft schema, with more than 33.000 tables. Since december Oracle has left more than 18 thousand of them with no statistics renewed: SQL> select to_char(last_analyzed,'...
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1answer
119 views

Different execution plans and joins using synonym or table

Edit: We found the leading cause. If you join tables with the same name but in different schemas, you can get this result. Same with joining two tables using the same alias (whyever this works at all)....
3
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1answer
2k views

How to audit database user password changes in oracle 11g?

I want to record how many times or which user accounts passwords were changed using Oracle database auditing techniques. I also want to record any password changes done to system user account.
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1answer
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Why would a query return oracle.sql.NUMBER@[hex value] in place of a numeric value?

I'm seeing some odd behavior in an Oracle 11gR2 database. When I select from a particular table, using SQL Developer, certain rows of the result set include non-numeric results in a NUMBER column (...
3
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1answer
387 views

What might be the cause of regular periodic slow transactions on an OLTP system?

I have a two node Oracle RAC cluster with that runs an oltp application against it. I have both a production and a duplicate test environment with the same setup. Upon running stress tests on the ...
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0answers
1k views

Getting email notification when jobs are created under user_schema rather than sys?

I log in as sys and set the smtp for scheduler: BEGIN DBMS_SCHEDULER.set_scheduler_attribute('email_server', '10.1.1.15'); DBMS_SCHEDULER.set_scheduler_attribute('email_sender', 'user@compny.com')...
3
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0answers
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UTL_MATCH.JARO_WINKLER_SIMILARITY - how can I set the prefix scale?

I'm using UTL_MATCH's Jaro Winkler similarity function and it seems to be performing well. However, I would like to adjust the prefix scale according to the situation. Is this possible? Is it possible ...
3
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0answers
119 views

Oracle replicat is abending when oracle is having special char while loading to teradata

I am doing replication from oracle to teradata where oracle is having below charter in one column. ->->-> ACSII value for this char is 26 . I need to replace it with null . In the charmap we have ...
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0answers
1k views

ORA-28545 (Net8) error when connecting Oracle 12c on Centos 7 to SQL Server 2014

I have installed Oracle 12c on Centos 7 and I wanted to connect SQL Server 2014 using freeTDS. So, I installed the following: FreeTds. unixODBC. Next, I configured ODBC on the Linux server so that, ...
3
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2answers
119 views

Causing ORA errors in a program using JDBC. How can I find what's causing them?

So I'm building a java app to interface with the company's database. Whenever it causes an ORA error, it just prints something like the following to system output: ORA-00911: invalid character Is ...
3
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0answers
586 views

plsql procedure gets invalidated

procedure involving dblinks gets invalidated regularly .we need to recompile every time.How to find what is causing the problem in my case procedure p1()--resides in db1 is begin .... select col1 ...
3
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1answer
5k views

sqlplus is not starting

I have a strange error on a Red Hat machine. InstantClient is installed in and ORACLE_HOME is set to /opt/oracle/product/112030_cl_64/cl/ The user which installed the client was oracle:oinstall. My ...
3
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0answers
936 views

Mismatched Oracle drivers - need upgrade (10.2.0.1 to 10.2.0.5)

I was forwarded here by recommendation from Stack Overflow ...... We are running Oracle Enterprise software on various client and DB servers and we are experiencing a problem (outlined here) where ...
3
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3answers
23k views

Create Oracle DB LINK to a database with no DB_DOMAIN

I'm trying to create a database link between this two DBs. My local DB is 11.2.0.3. SQL> select * from global_name; GLOBAL_NAME -------------------------------------------------------------------...
3
votes
1answer
3k views

12c Grid Agent installation issues - Shell path is incorrect or not defined

I am installing 12c Grid Control agent on my server via Enterprise manager. The targer server is a UNIX server with AIX OS on it. I add target host manually, enter authentication information, host ...
2
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0answers
697 views

Oracle BI 12C (12.2.1.4.0) Configuration Assistant Error (Adding default service instance) on Windows Server 2016

I'm installing Oracle BI Pub 12c (12.2.1.4.0) on Windows Server 2016, all steps were successfully passed but on "Add Default Service Instance" it throws below error Not sure what to do now, ...
2
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1answer
79 views

Is DBMS_CRYPTO.RANDOMNUMBER a cryptographically secure pseudo-random number generator?

Oracle documentation clearly states that DBMS_CRYPTO.RANDOMBYTES is a cryptographically secure pseudo-random sequence of bytes. But how about DBMS_CRYPTO.RANDOMNUMBER? (or DBMS_CRYPTO.RANDOMINTEGER) ...
2
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0answers
191 views

Whether or Not to Use DataPump with Oracle GoldenGate

We are setting up GoldenGate to keep 3 of our Oracle databases in sync. Regarding configuration:   We plan to have an instance of GoldenGate running on all 3 nodes. Each node will run an extract on (...
2
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1answer
779 views

Oracle 12c Database Config Manager very slow at creating a new database

I have installed Oracle 12c on a number of machines (Windows 10, 2012, 2016 mostly) before and created several databases on them, using the Database Config Manager, all with no real hiccups. However ...
2
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0answers
293 views

Incremental Schema Stats (With partitioned/Subpartition table) gathering is taking too much time in oracle version 12.2.0.1

When I am gathering schema stats with below options, it is taking too much time: EXEC dbms_stats.gather_schema_stats ( ownname => 'SCHEMA', granularity => 'AUTO', CASCADE=> true, ...
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0answers
911 views

How to solve problem when oracle apex does not let me do anything with my created schemas even though I should have privileges?

I have a problem with with latest version of APEX, I have installed it on my pc, i logged in as and admin created workspace with schema, but when I log in to that workspace as a user with admin's ...
2
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0answers
148 views

How to monitor progress of Oracle Materialized View

I have created a materialized view in Oracle 12.1 database. The master table has materialized view log created, so that I can do a fast refresh. I have executed the refresh using DBMS_MVIEW.REFRESH, ...
2
votes
1answer
348 views

Non-CDB database vs Single tenant CDB

I am looking at the prospect of upgrading from oracle 11G to 12C, and I am looking at the cdb vs non-cdb models, and I am having a hard time seeing the benefit of using CDB, without multitenant ...
2
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0answers
61 views

Does Azure SQL natively support being the subscriber in transactional replication where Oracle is the publisher?...and if PostgreSQL is the publisher?

Is there a native way to setup transactional replication where an Azure SQL database is the subscriber and the publisher database is in Oracle? What if the publisher database is in PostgreSQL? If ...
2
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0answers
1k views

How do I do an ODBC connection to ORACLE from SSIS/ Visual studio?

Despite that OLE Db and ADO.NET are newer than ODBC potentially, I've heard that ODBC connections to Oracle are potentially faster within SSIS. So --- I'm trying to set up a simple ODBC connection to ...
2
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1answer
3k views

Oracle Warning in Alert Log Regarding PGA_AGGREGATE_LIMIT

Introduction During the startup process of our Oracle instances, we are encountering the following error message in the alert log: WARNING: pga_aggregate_limit value is too high for the amount of ...
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0answers
2k views

ORA-01031: insufficient privileges solution oracle

Create or replace procedure myprocedure is stmt varchar2(1000); stmt2 varchar2(1000); begin stmt := 'create global temporary table temp(id number(10))'; execute immediate stmt; ...
2
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0answers
2k views

Configuration of TCP/IP with SSL and TLS for Oracle

I am trying to configure the connections to my Oracle database with tcp / ip using ssl I have been guided by the procedure of the site https://oracle-base.com/articles/misc/configure-tcpip-with-ssl-...
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0answers
1k views

Unable to start Oracle Listener - "The user name or password is incorrect"

I am trying to install Oracle Database 12c on a Windows Server 2012 machine. The installation goes well for the most part, except that I get the error "Oracle Net Services configuration failed" (that ...
2
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0answers
594 views

Bidirectional realtime synchronization between Oracle and SQL Server tables

I have to sync data between Oracle and SQL Server database tables. And I'm actually looking for some advice on which technologies to use or how to address this. At the moment I'm doing the Oracle → ...
2
votes
1answer
9k views

Why create a Materialized View Log with Primary Key or RowID, etc?

I have a table with 600million rows. I want to create a materialized view that filters it down to 50 million records but also uses REFRESH FAST ON COMMIT. To use REFRESH FAST I need a MATERIALIZED ...
2
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2answers
575 views

How do I run a database heavy query over jdbc without timing out (Oracle)?

For one of our applications (Pentaho Data Integration), we need to run queries through the oracle jdbc. Some of these queries are computation expensive and can take an hour or more to return any rows ...
2
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0answers
39 views

Replication to SQL Server and to Oracle not working for one database

I have a replication for many databases on one server to one SQL Server database and to Oracle. Replication for one database is not working while the other four databases are working. For SQL Server ...
2
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0answers
5k views

Oracle Database Client 12c Product Components

When installing the Oracle Database Client 12c Release 2 software on a Windows client the user has the option to select an installation type. These are: Administrator RunTime InstantClient Custom ...
2
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1answer
451 views

Oracle encryption wallet 12c

I exported a database to a transportable tablespace and send the data to a customer. They received the error: ORA-28365 Wallet is not open. Do I need to close the wallet before creating the export? ...
2
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0answers
518 views

Why is Oracle SQL slower than cursors?

I am converting an SQL Server system to run on Oracle (11g). The system has all been set up, data loaded, etc. The Oracle system was loaded using all standard default values. The amount of data is ...
2
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0answers
4k views

"Acknowledge over PGA limit" wait event

Is it possible for this wait event to activate/showup even when the PGA has not crossed over PGA_AGGREGATE_LIMIT? I am continuously seeing this wait event in the ASH, but the PGA allocated stays ...
2
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1answer
398 views

Cloning a PDB from one CDB into another CDB with TDE enabled at source and target

What are the possible ways to Clone a PDB from one CDB into another CDB (in a different host) with TDE enabled at both source and target. At present i am able to think of the following two a) Data ...

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