Oracle Database 11g Release 2. Please also tag oracle for search purposes.

learn more… | top users | synonyms

4
votes
1answer
4k views

Drop user did not reduce size of tablespace file

I have a development environment in which I frequently copy a certain schema. When I'm done with the copy, I will use OracleEM to drop that user/schema. My problem is that this does not seem to ...
4
votes
2answers
2k views

Oracle extents - How can I have so many with this small size?

This is a different question than the one with the almost-identical title. Again, this is more curiosity about how Oracle Database works than anything I need to change (yes I know multiple extents ...
4
votes
1answer
539 views

Isssue with Database Links converting OEM Job to DBMS_Scheduler Job

We had an OEM job that would run a PL/SQL block using a particular database users credentials. The credentials are the same for two different databases, so there was no problem for the block to use a ...
4
votes
1answer
760 views

How to generate an SQL file with DBMS_DATAPUMP

I am trying to generate an SQL file with the DBMS_DATAPUMP api. This tasks is specifically adressed in Oracle support Note 1519981.1 (How To Generate A SQL File Using The DBMS_DATAPUMP API). When I ...
4
votes
2answers
1k views

Compare two Oracle database roles

I'm trying to re-engineer my corporates user managament and want to compare all the roles with each other to find duplicate ones. Doing it by hand is really tiring and I need to compare like 150 ...
4
votes
1answer
576 views

How to I interleave logs from two different Oracle tables?

I have two log tables, which are populated from two different PL/SQL packages. It's often useful to keep the data separate, but sometimes I'd like to "interleave" the two tables so I can see what's ...
4
votes
2answers
6k views

Shrinking the SYSTEM tablespace in Oracle

Our SYSTEM tablespace grew out of control because of the SYS.AUD$ table. We have truncated SYS.AUD$ but the datafile is still very big (~30G). Resize doesn't work because the file contains used data ...
4
votes
1answer
941 views

Oracle: How to gather stats in a logical standby database?

I have a Primary and a (logical) Standby Database. The Schema 'APP' gets synced. Now a User has performance issues running a query against some tables in this 'APP' schema of the Standby Database. On ...
4
votes
2answers
698 views

Check if an index exists by comparing columns

We are currently using ALL_IND_COLUMNS to check if an index exists by its name or the columns it is using. The problem is that we can only check if the index exists with columns in a specific order. ...
3
votes
4answers
4k views

Is it safe to delete dummy tables Oracle 11g XE

i created a database schema in 11g express edition, however there are some APEX tables and some dummy data... Is it safe to delete them? also i would like to know what does apex means and why they ...
3
votes
4answers
15k views

Environment Varible PATH exceeding recommended length solution?

I am attempting to install Oracle Database 11g on a Windows 7 64x laptop. I get all the way to step 5 of 8 and I get a fail on Environment variable path "exceeds recommended length"... I have ...
3
votes
3answers
4k views

How to automate Oracle DB installation (like a 'hands-free' install)?

I installed the Oracle 11g2 'standard' edition using the following zip-files: linux.x64_11gR2_database_1of2.zip linux.x64_11gR2_database_2of2.zip I used the installation guide by Oracle which I ...
3
votes
2answers
1k views

How make convincing case to DBA to use Oracle external tables for 500 MB to 5 GB files?

In our data feeds, we have a stack of XML files as well as numerous flat files to put into an Oracle11g database. We flatten the XML into delimited files, and load the whole set using SQLLoader. I ...
3
votes
2answers
24k views

Using Oracle client to connect to remote database

Although I can do a telnet to remote oracle port I am unable to connect. I have a following tnsname.ora connecting to oracle database using sql plus: remoteOracle = (DESCRIPTION = (ADDRESS_LIST ...
3
votes
1answer
8k views

How to combine `delete` and `insert` operations in one statement?

for the following data, I'd like to be able to delete some rows and insert others giving the result below. Is this possible with a single statement (eg with the merge statement)? create table ...
3
votes
3answers
596 views

What's the most cost effective or cheapest way for high availabity on Oracle Standard Edition One?

We are currently using Oracle Standard Edition One running on two physical database server. If I wanted to get higher availability, what's the most cost effective way or cheapest way to achieve this? ...
3
votes
2answers
322 views

How to retrieve disk spaces by removing tables from tablespaces in Oracle 10g?

I'm using a Oracle 10g database. I have a big tablespace MYTBS made of a dozen data files (MYTBS_01, MYTBS_02, ...) of different sizes which have been added through the years. Now i have removed very ...
3
votes
2answers
786 views

Pivoting data for stacked charts (grouping and creating new columns for each distinct value)?

I have something that looks like this (SQL Fiddle here): Date Location Value 1/1/2012 Baltimore 36 1/1/2012 Houston 36 1/1/2012 Chicago 55 2/1/2012 Baltimore 49 ...
3
votes
1answer
3k views

What does WE8DEC mean?

It is one of the commonly used character sets. What does it stand for? Is it an acronym for something?
3
votes
1answer
8k views

SHA-256 hashing in oracle 11g

How can i encrypt or hash a password inside a trigger using sha-256 so that i can store the hashed value in another table using that trigger? Also how can I decrypt it??
3
votes
1answer
1k views

Index on foreign key makes query extremely slow

We are recently experiencing a tremendous query slowdown with spilled over temp tablespace. A specific query causes this problem. The queried table (table3) has an indexed PK, three FK with indexes ...
3
votes
1answer
3k views

can I replace nulls in a PIVOT with zeroes?

I am using the PIVOT function in Oracle and am curious if I can replace the null values with zeroes? I know I can wrap the entire query in another SELECT and then use COALESCE on the values, but I am ...
3
votes
2answers
13k views

Add additional disks to FRA diskgroup in ASM

We're running Oracle 11.2.0.3 with a two node RAC and our FRA diskgroup is running low on space. I need to allocate some more disks to it through ASM. I'm not sure how to go about doing this. I can ...
3
votes
1answer
112 views

Using Inteval Datatype to store result of calculation

I want to create a table which has hiredate and Interval of hiredate and sysdate. How to create a column that automaticlaly stores the calculation.
3
votes
1answer
3k views

How to create oracle linked server in oracle server itself?

Is it possible to create oracle linked server in other oracle server? I actually wanted to do this with sql server but in sql server I couldn't run long query (8000 limit). I have access to ...
3
votes
2answers
458 views

How to create a user with a particular user_id?

Is it possible to specify the user_id of a user while creating it? SQL> create user user1 identified by user1; User created. SQL> select user_id, username from all_users where ...
3
votes
1answer
8k views

How to connect multiple users/schemas in Oracle 11g?

I'm almost new user to databases, so I think I'm doing something wrong. I have the database created. I created 3 users, 1 it's an Admin, 2 are just users. I created 2 roles, 1 for the Admin and 2 ...
3
votes
1answer
1k views

How far should bind variables go in Oracle?

I am currently examining all database users's SQL code in our department for not using bind variables. We do experience an ORA-04031 error within a constant period of time. Now, I have a quite firm ...
3
votes
1answer
1k views

Query taking long on table with low record count

I have an Oracle flat table that grew to just below 800MB. The table was truncated and new records are being inserted. Currently there are <40 records in the table but a select * takes >30secs. ...
3
votes
1answer
1k views

Oracle explain for cascading delete is wrong

My deletes in Oracle 11 are very slow. The tables are linked by foreign keys and every foreign key constraint has a delete cascade set on it. If I hit the explain button on a statement like this ...
3
votes
3answers
138 views

Putting the database in backup mode before making file system changes

We are planning to make a small change in the Linux file system. To be on the safe side, I thought I would take a SAN-level snapshot of all the drives beforehand. I was thinking I should put the ...
3
votes
1answer
6k views

How can I delete a corrupted table space?

Problem: On an Oracle 11.2g DB; We have a corrupted TS that does not allow starting the database instance above mount state. The TS cannot be removed with standard methods (i.e., enterprise manager). ...
3
votes
1answer
8k views

SQL*Loader-605: Non-data dependent ORACLE error occurred

As I try to load data into Oracle, I've encountered SQL*Loader-605: Non-data dependent ORACLE error occurred error. Data is (are?) in .txt file and its size is 95GB. Here are some more details ...
3
votes
1answer
814 views

In a two-server dataguard setup, can I store the recovery catalog in the same database?

We currently have an Oracle 11gR2 database that is backed up with rman, with the rman records stored in the control files. Control file auto-backup is turned on. Backups are to disk (and, ultimately, ...
3
votes
2answers
71 views

Database not able to startup showing control file is inconsistent with another

Our windows server 2008 R2 is shutdown due to power failure. When I am trying to startup Oracle 11g database its shows an error. SQL> startup ORA-01081: cannot start already-running ORACLE - shut ...
3
votes
3answers
3k views

Permissions needed to call DBMS_DATAPUMP from within package

I am attempting to write a procedure (within a package) that calls DBMS_DATAPUMP to copy an existing schema into a different schema. The code works when executed from an anonymous block, but from a ...
3
votes
2answers
19k views

How to quickly startup/shutdown Oracle 11?

I am wondering what is the quickest way to properly startup/shutdown a Oracle DB daemon (Oracle 11.2, installed on a test machine). I need it for C/C++ programs that use the OCI/Pro*C API. Currently ...
3
votes
1answer
681 views

Wait time differences in Oracle

I'm trying to track the different wait time classes for current Oracle sessions but I must be misunderstanding something. When I compare the sum(time_waited)/1000 for a given session in ...
3
votes
3answers
675 views

Why does the query cost change so much and how to prevent it

The query causing me the issue is too big, but the piece that seems to be the core is quite simple, I will try to go with that: The query has an structure like: SELECT ... a lot of stuff ... ...
3
votes
1answer
433 views

Log rotation of diag logs?

In on of our Oracle 11.2.0 installations the directory database\diag\rdbms\$DB\$DB\alert is filled with hundreds of xml files (log.xml, log1.xml ...). Can Oracle be configured to do log rotation ...
3
votes
1answer
540 views

Oracle 11, incremental backup goes wrong

Got a pretty big instance on a one-week backup cycle with an incremental (differential) strategy .. or rather, that's what it was supposed to be. Somehow the daily differentials seem to come out as ...
3
votes
2answers
928 views

Oracle extents - How can I have so few with this large size?

Note on duplication: This is not a duplicate of "Oracle extents - How can I have so many with this small size?" This is a separate question I entered which happens to be in the same domain. This is ...
3
votes
2answers
3k views

Create unique DB_NAME and DB_DOMAIN for an Oracle 11g instance

I am somewhat confused by these terms in the init.ora file: db_domain db_name instance_name plus the database name which is provided to the create database command. I do not completely understand ...
3
votes
1answer
9k views

Oracle 11g hunting down the deadlock, maybe foreign key?

I am trying to understand why a deadlock occurs in my database. The trace tells me that two updates on the same table are locking. In table is the first table to be written to in an transaction, only ...
3
votes
1answer
1k views

Oracle query against SQL Server database giving inconsistent results

We have multiple Oracle 11.2.0.2 databases with og4odbc database links to a SQL Server 2008 database. A particular table in the SQL Server database has two Varchar(36) columns. The following ...
3
votes
1answer
4k views

Optimal value for LOG_BUFFER parameter

The wait event “log buffer space” according to the documentation can indicate that the log buffer is too small or the I/O is slow. We have a system seeing this event in which the redo buffer ...
3
votes
1answer
58 views

Running / Accumulative Sum with Reset - Oracle

I am trying to accumulate a sum, but the sum accumulated cannot be positive. So far i got the following: Select t.caccserno,t.Reportingmonthyear,t.Amount,t.cycleage from temp_UnpaidInterest t ...
3
votes
1answer
104 views

Function Based Index with XPATH extractValue

// Oracle Version 11.2.0.4 Standard Edition // OS RedHat I am trying to create a function index on a large table, based on using an XML object. So I have done stuff such as: CREATE INDEX ...
3
votes
1answer
350 views

How to maintain a global index on a large table undergoing regular partition purges?

Problem I've got giant table haystack weighing in at nearly 3 TB, partitioned by month (date) and subpartitioned by client. I need to create a global index that spans all clients to facilitate ...
3
votes
3answers
123 views

Why does the CBO eliminate `distinct` and not `group by` in this query?

The CBO chooses to eliminate the distinct in the 'slow' query - presumably it can tell that the operation isn't needed because of the outer group by. My questions are: 1) Why does it choose to do so ...