This post demonstrates how to deinstall / install Oracle Text in 12.1.0.2. Before doing so, DBA should make sure and understand the component dependencies as below.
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Month: February 2021
How to Install and deinstall Oracle Text in 11.2.0.4
This post demonstrates how to deinstall / install Oracle Text in 11.2.0.4. Before doing so, DBA should make sure and understand the component dependency as below.
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How to Terminate the Idle Sessions Automatically in Oracle
Poor application design can cause excessive connections to Oracle database, the idle sessions stuck in Oracle database forever, finally the ORA-00020 error occur in alert log.
Certainly DBA can write a job to kill the idle sessions periodically. Instead, here we will take advantage of Oracle features to terminate idle sessions in Oracle database automatically.
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ERROR: currval of sequence “SEQUENCE_NAME” is not yet defined in this session
In PostgreSQL, when trying to get the current value of a sequence, the following errors occur:
select currval('SEQUENCE_NAME');
ERROR: currval of sequence "SEQUENCE_NAME" is not yet defined in this session
SQL state: 55000
SOLUTION
Query PG_SEQUENCES to get the last value of sequences.
=> \d pg_sequences
View "pg_catalog.pg_sequences"
Column | Type | Collation | Nullable | Default
---------------+---------+-----------+----------+---------
schemaname | name | | |
sequencename | name | | |
sequenceowner | name | | |
data_type | regtype | | |
start_value | bigint | | |
min_value | bigint | | |
max_value | bigint | | |
increment_by | bigint | | |
cycle | boolean | | |
cache_size | bigint | | |
last_value | bigint | | |
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