JDBC + PG-15 but not psql

Hello.

I have searched the net in an attempt to find if others have had and
resolved this challenge, but most of the sites talk about how, when using
the psql, this error arises. In my case, the error arises only when access
PG-15 using JDBC.
JDBC connects to the database, but when trying to execute a schema, it be
to create a database or to create a tabelspace I get this error :

*StackTrace : [Ljava.lang.StackTraceElement;@7a69b07*
*Message : ERROR: CREATE TABLESPACE cannot run inside a transaction block*

I have used the same algorithm, but now modify to accommodate PG-15, when
using SQLite. So the JDBC code might not be the problem, but the
requirements needed from PG-15.

Change of perspective, I resolved the concern!

Here is what changed the outcome :
--- snip ---

public void connectToDatabase() throws ClassNotFoundException,
SQLException {
try {
Class.forName(this.getDatabaseClass().toString());
this.conn =
DriverManager.getConnection(this.getDatabaseUrl().toString(),
this.getUserID().toString(),
this.getUserPassword().toString());

*this.conn.setAutoCommit(true);** //** game changer!!*

this.pout("Connected to the PostgreSQL server, success!!!");

this.stmt = this.conn.createStatement();
} catch (final SQLException | ClassNotFoundException e) {
throw e;
}
}

--

All I had to do was to setAutoCommit to true, PG-15 set this value to
false by default.

I hope my experience can help others.

On 8/21/23 2:51 p.m., Dave Cramer wrote:

Hi Amn,

Can you help me understand this issue better?

I don't see anywhere in the code where you are attempting to create a
tablespace ?

Dave Cramer

On Sun, 20 Aug 2023 at 11:17, Amn Ojee Uw <amnojeeuw@gmail.com> wrote:

Hello.

I have searched the net in an attempt to find if others have had
and resolved this challenge, but most of the sites talk about how,
when using the psql, this error arises. In my case, the error
arises only when access PG-15 using JDBC.
JDBC connects to the database, but when trying to execute a
schema, it be to create a database or to create a tabelspace I get
this error :

*StackTrace : [Ljava.lang.StackTraceElement;@7a69b07**
**Message : ERROR: CREATE TABLESPACE cannot run inside a
transaction block*

I have used the same algorithm, but now modify to accommodate
PG-15, when using SQLite. So the JDBC code might not be the
problem, but the requirements needed from PG-15.

Change of perspective, I resolved the concern!

Here is what changed the outcome :
--- snip ---

public void connectToDatabase() throws ClassNotFoundException,
SQLException {
    try {
        Class.forName(this.getDatabaseClass().toString());
        this.conn =
DriverManager.getConnection(this.getDatabaseUrl().toString(),
                this.getUserID().toString(),
                this.getUserPassword().toString());

*this.conn.setAutoCommit(true);*/*//*//*game changer!!*/

        this.pout("Connected to the PostgreSQL server, success!!!");

        this.stmt = this.conn.createStatement();
    } catch (final SQLException | ClassNotFoundException e) {
        throw e;
    }
}

--

All I had to do was to setAutoCommit to true, PG-15 set this value
to false by default.

I hope my experience can help others.

Thanks Dave for your interest.

In the OP I started by explaining the difficulties when trying to create
a tabelspace using JDBC; please note that when using the PG-15 prompt I did
not have the problem. Well, it turns out that while developing the request
for help (writing the email), I realize that my code had the following line
:
*this.conn.setAutoCommit(false);*
However, in my research, I had read a post mentioning that by setting *auto
commit* to *true* the issue was solved. So, I changed that line of code
in my algorithm to :
*this.conn.setAutoCommit(true);*
Which also resulted in my app working without any errors.

Please read the code-snip I submitted; there you can see that line of code
I edited; which I commented with "*//** game changer!!".*

Thanks again Dave, have great week.

On 8/21/23 2:51 p.m., Dave Cramer wrote:

Hi Amn,

Can you help me understand this issue better?

I don't see anywhere in the code where you are attempting to create a
tablespace ?

Dave Cramer

On Sun, 20 Aug 2023 at 11:17, Amn Ojee Uw <amnojeeuw@gmail.com> wrote:

Hello.

I have searched the net in an attempt to find if others have had and
resolved this challenge, but most of the sites talk about how, when using
the psql, this error arises. In my case, the error arises only when access
PG-15 using JDBC.
JDBC connects to the database, but when trying to execute a schema, it be
to create a database or to create a tabelspace I get this error :

*StackTrace : [Ljava.lang.StackTraceElement;@7a69b07*
*Message : ERROR: CREATE TABLESPACE cannot run inside a transaction block*

I have used the same algorithm, but now modify to accommodate PG-15, when
using SQLite. So the JDBC code might not be the problem, but the
requirements needed from PG-15.

Change of perspective, I resolved the concern!

Here is what changed the outcome :
--- snip ---

public void connectToDatabase() throws ClassNotFoundException,
SQLException {
try {
Class.forName(this.getDatabaseClass().toString());
this.conn =
DriverManager.getConnection(this.getDatabaseUrl().toString(),
this.getUserID().toString(),
this.getUserPassword().toString());

*this.conn.setAutoCommit(true);** //** game changer!!*

this.pout("Connected to the PostgreSQL server, success!!!");

this.stmt = this.conn.createStatement();
} catch (final SQLException | ClassNotFoundException e) {
throw e;
}
}

--

All I had to do was to setAutoCommit to true, PG-15 set this value to
false by default.

I hope my experience can help others.

On 8/22/23 8:31 a.m., Dave Cramer wrote:

Hi Amn,

What I don't understand is the requirement to set autocommit to true
since this is the default ?

Either way this is expected behaviour as psql also has autocommit true
by default.

Thanks,

Dave Cramer

On Mon, 21 Aug 2023 at 20:57, Amn Ojee Uw <amnojeeuw@gmail.com> wrote:

Thanks Dave for your interest.

In  the OP I started by explaining the difficulties when trying to
create a tabelspace using JDBC; please note that when using the
PG-15 prompt I did not have the problem. Well, it turns out that
while developing the request for help (writing the email), I
realize that my code had the following line :
*this.conn.setAutoCommit(false);*/*
*/However, in my research, I had read a post mentioning that by
setting /auto commit/ to *true* the issue was solved. So, I
changed that line of code in my algorithm to :
*this.conn.setAutoCommit(true);*/*
*/Which also resulted in my app working without any errors./**/

Please read the code-snip I submitted; there you can see that line
of code I edited; which I commented with "/*//*//*game changer!!".*/

Thanks again Dave, have great week.

/*
*/

On 8/21/23 2:51 p.m., Dave Cramer wrote:

Hi Amn,

Can you help me understand this issue better?

I don't see anywhere in the code where you are attempting to
create a tablespace ?

Dave Cramer

On Sun, 20 Aug 2023 at 11:17, Amn Ojee Uw <amnojeeuw@gmail.com>
wrote:

Hello.

I have searched the net in an attempt to find if others have
had and resolved this challenge, but most of the sites talk
about how, when using the psql, this error arises. In my
case, the error arises only when access PG-15 using JDBC.
JDBC connects to the database, but when trying to execute a
schema, it be to create a database or to create a tabelspace
I get this error :

*StackTrace : [Ljava.lang.StackTraceElement;@7a69b07**
**Message : ERROR: CREATE TABLESPACE cannot run inside a
transaction block*

I have used the same algorithm, but now modify to accommodate
PG-15, when using SQLite. So the JDBC code might not be the
problem, but the requirements needed from PG-15.

Change of perspective, I resolved the concern!

Here is what changed the outcome :
--- snip ---

public void connectToDatabase() throws
ClassNotFoundException, SQLException {
    try {
Class.forName(this.getDatabaseClass().toString());
        this.conn =
DriverManager.getConnection(this.getDatabaseUrl().toString(),
                this.getUserID().toString(),
this.getUserPassword().toString());

*this.conn.setAutoCommit(true);*/*//*//*game changer!!*/

        this.pout("Connected to the PostgreSQL server,
success!!!");

        this.stmt = this.conn.createStatement();
    } catch (final SQLException | ClassNotFoundException e) {
        throw e;
    }
}

--

All I had to do was to setAutoCommit to true, PG-15 set this
value to false by default.

I hope my experience can help others.