process to connect AGE code to GDB debugger in linux

1. go to the directory where you have installed postgres from source code.

2. start the server using following command:
bin/pg_ctl -D [db cluster name] -l [logfile (optional)] start
for example
bin/pg_ctl -D demo -l logfile start

3.now run psql utility using command:
bin/psql [db name]
for example
bin/psql demodb

4. now find the pid (process id) of the running postgres instance.

• use system monitor and search for postgres as show in the fig below

• or use command: ps -ef | grep postgres

5. open new terminal and run command: sudo gdb

6. now use command attach [pid] pid is process id for postgres that you have found in step 4

for example attach 8024

7. Attach the directory of AGE repository to GDB, so that GDB can find the code of AGE using:

For example:

dir /home/ununtu/age_installation/age

8. Now you can add breakpoints at required functions using:
for example:

b parse_cypher

Now when you pass a query through psql to postgres server, the query will stop at the breakpoints and you can move around the code using standard GDB commands.

I hope you have learnt something from this
if you have any question you can ask.

Visit for more about Apache AGE:

official website: https://age.apache.org/

Github: https://github.com/apache/age/